TWI279237B - Venous catheter with backflow draw - Google Patents

Abstract

A venous catheter with backflow draw mainly includes a drawing unit for pump and draw, and a needle set. The needle set contains a needle linked to the drawing unit, a catheter seat that can be detached from the drawing unit, and a flexible catheter linked to the catheter seat for the needle to go through. The invention draws and displays backflow blood in blood vessel with drawing unit, and that after the needle is detached from the catheter, flexible catheter can be left inside the blood vessel. The invention includes a tube, where the needle can be drawn and hid to a needle back draw unit inside the tube for enhanced safety.

Description

1279237 IX. Description of the invention: [Technical field to which the invention pertains] = 暇 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 于 先前 先前 先前 先前In the case of a general clinical medical treatment, when a patient is administered an intravascular infusion, a rotary catheter placed in the blood vessel is continuously infused with a drip infusion, and the intravenous injection device 10 mainly includes a needle holder 101, and the needle The socket 101 is connected to the v-seat 102, the catheter 1 〇3 which is connected to the catheter hub 102 and can be flexed, and the needle-body 104 of the tube (8). /, "Needle (9) And the needle holder 101 is grasped by the guide, and the needle is inserted into the needle 2〇4 to guide the catheter 1〇3 into the blood vessel, and can be in;::;04 After the withdrawal, the catheter 1.3 is placed in the blood vessel, and the function of the:: can be deflected to avoid the uncomfortable feeling of the animal body. =4 Guide S-seat 1G2 is available for drip-wheel line (not shown), or: a syringe for the agent (not shown), for intravascular infusion, and a == device for blood drawing. However, the intravenous injection device is still a medium for applying drugs or blood, but there are still the following defects in the actual use of the daily observance and need to be resolved: h tea reading Figure 2 'When the needle body 104 guides the catheter 103 into the posterior needle of the blood vessel, the two fluids are extravasated to the catheter 1〇3 and the function of reaching the blood to show that the medical staff has placed 1279237 the needle 104 and the catheter 1〇3 It is properly placed in the blood vessel, but the technical means of providing the through hole 1〇5 on the 104 is easy to bow the tapered needle 4, and further, if operated, the needle 1〇4 and The entire section of the catheter 1 〇 3 隐 hidden in the subcutaneous tissue or blood vessels, will lose the function of blood. _ 2 · important sputum, emergency patients or critically ill patients need to establish an intravenous vein g line with the same blood test After that, the follow-up drug or surgical treatment is started. Therefore, since the injection file does not have the function of blood sampling, and the needle body is quite pointed and fits with the catheter 1〇3, when the patient's blood pressure is not electric, The liquid is exuded from the D-hole 105 (such as emergency patients, elderly or pediatric patients)%, 'or disease If the target blood vessel is unclear and need to be probed (such as obese, old, or female), it is impossible to quickly determine whether the needle iG4 and the catheter 103 are correctly placed in the blood vessel, and the puncture action has to be repeated. 1 It takes time and trouble to make the operation, which makes it difficult for the medical operation, especially the emergency patient to heal the time of the gold, or makes the patient feel painful and uncomfortable. 3. And the medical staff is smooth in the operation, often in the blood or infusion pipeline industry. After the completion, the needle body HM and the work object are collected and processed separately, so that the needle body 1〇4 benefits Fascin & female, Tanaka "" 4 ", and the law avoids the situation Therefore, if the corpse is slightly inadvertent, there will be a stabbing of the doctor Cui Renbian, and the person and the person, causing pain or even: Zhu Le disease infection risk. In order to improve the needle ι〇4 exposed, ' Shot two cities: There is another intravenous syringe that can withdraw and hide the needle of the needle 1〇4, which is often noisy, and there is no pumping. The function of blood still has the aforementioned The bow problem, or even the operation of the intravenous catheter guide is more inconvenient 'so' refer to the attachment - that is, 2, 4 years, 1 month, 6 1279237, the open letter of the annual meeting of the Second National Medical Association, it is clear that manufacturers are not allowed to stop ^ The manufacture of the venous stencil guide 1 is set to 1 (). Obviously, the general intravenous injection guide 10 and the intravenous syringe of the retractable needle body 104 have a lack of safety and ease of operation when used. SUMMARY OF THE INVENTION Therefore, the main object of the present invention is that ^ ^ 1 is a venous guide tube setter that can be used for sampling and returning blood with a function of measuring the t-liquid and the intravenous infusion catheter. ' ^ = invention Another object is to provide an intravenous catheter setter that has a measurable blood return with a retraction of the hidden needle. • In 疋, the intravenous catheter setter for measuring blood return in the present invention comprises: a sampling unit and a needle group. The sampling unit is capable of generating a sucking action: the material group has a body connected to the sampling unit and disposed outside the sampling unit, and a detachable ground is coupled to the sampling unit, and the V-position A flexible catheter that is coupled to the needle body for insertion. In addition, the intravenous catheter setter for measuring blood return in the present invention further comprises a tube and a needle withdrawing unit. The tube has a tube wall and a guiding groove surrounding an axis and defining a lumen, the tube wall has an outlet end and an inlet end extending in opposite directions, and the guiding groove is formed on the tube wall And extending from the inlet end in the direction of the outlet end along the axis. The needle back pumping unit has a needle seat that is slidably positioned in the lumen of the tube adjacent the outlet end and has a convex portion that radially passes through the tube guide groove, the convex portion The portion can be slid along the lumen to the adjacent inlet end according to the external force. The sampling unit is connected to the needle protrusion and can generate a clearing action. 7 1279237 The needle set has a needle body coupled to the needle holder and communicating with the sampling unit, and a catheter seat detachably sleeved on one of the tube barrel and the needle holder, and is coupled to the catheter holder And a flexible catheter for the needle to pass through, the needle body is slidable to the inlet end of the tube adjacent to the tube holder and is hidden in the tube tube. Efficiency, convenience and safety when setting up an intravascular drip infusion catheter. The above and other technical contents, features, and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments. Before the present invention is described in detail, it is to be noted that in the following description, similar elements are denoted by the same reference numerals. Referring to Figures 3 and 4, a first preferred embodiment of the intravenous catheter setter for withdrawing blood from the present invention comprises: a pumping unit and a needle set 2. The pumping unit has a first tubular member 在 in this embodiment. The first tubular member 1 has a surrounding wall 12 that surrounds an axis and defines a chamber u. The surrounding wall 12 has a closed end 121 and an outlet end 122, a large diameter section 123 adjacent the closed end 121, and a small diameter section 124 adjacent the outlet end 122. The large diameter section 123 is elastically plastically deformable to compress and restore the chamber 11' to cause a sucking effect in the chamber 丨i. The "Hay Needle Group 2" has a needle body 21, a catheter hub 22, a flexible catheter and a needle hub 24. The needle body 21 has a fixing portion 211 fixed to the small diameter portion 124 of the first pipe member 1, and a puncture formed in the first pipe member 1 which is formed in the opposite direction to the fixing portion 211. End 212. The catheter hub 22 is sleeved with the small diameter section 124 of the first tube member i. The catheter hub 22 is free of tension and is pierced by the piercing end 212 of the needle body 21. The crucible is sleeved on the large diameter section 123 of the first tubular member 1, and the crucible body 21 is covered, and the catheter hub 22 and the catheter (1) are collapsed. Figure 4, Item 5, when used, the medical staff only needs to know the handle from the needle sleeve 'then' In the segment 123, the chamber u is compressed, and then the puncture end 212 of the needle body 21 is punctured into the blood vessel of the animal body. At this time, the mouthpiece item releases the large diameter section 123 of the first tube member. The large diameter section 12^ is returned to the process t, and the suction action is generated in the chamber u, and the blood is pumped and guided along the needle body 21 to the cavity of the first pipe member, so that the Yes, as shown in the figure: the blood return phenomenon is displayed around the wall 12 to indicate that the medical staff has turned the needle η into the blood vessel correctly. Thereby, the medical staff can quickly determine whether the needle body and the catheter 23 have correctly entered the blood vessel, and can perform the operation of sampling and returning blood with one hand synchronously, thereby improving the efficiency and convenience of rapidly setting the intravenous infusion catheter of the patient in clinical medical treatment. Sex, in order to fight for the treatment of gold in the emergency body. Referring to Fig. 6, when the needle body 21 is correctly inserted into the blood vessel, the catheter 23 can be synchronized into the blood vessel, and at this time, only the catheter hub 22' and the first tube member 1 can be removed. The needle body 21 is separated from the blood vessel, the catheter hub 22 and the catheter 23, and the catheter 23 is guided into the blood vessel, and the catheter hub 22 can be connected to the general infusion line for spot injection. After the operation of guiding the catheter 23 into the fourth (4) is completed, the needle sleeve % 9 1279237 can be directly placed on the first tubular member, the large diameter section i23 and the body 21, for the purpose of safely isolating the needle body 21. . 7 and FIG. 9 are the second and third aspects of the present invention, which are substantially the same as the first preferred embodiment, except that: § "The needle group 2 has a connection socket 25. As shown in FIG. The 25 is screwed into the small diameter section 124 of the first tube member 1 around the wall U, and the needle body 21 is connected to the consolidating portion 211. As shown in Fig. 8, the coupling seat is sleeved in the first tube. They surround the small diameter section 124 of the wall 12. The fixing portion 2U is fixed to the coupling seat 25 and communicates with the first tube, the diameter section 124, the outlet end 122 and the cavity. η is detachably sleeved on the adapter seat 25, so that the needle body can be worn through the catheter 23. The needle sleeve ice is detachable and can be placed in the socket. The catheter hub 22 is completed. # Finishing the operation of introducing the catheter into the blood vessel. The needle sleeve 24 can be directly placed on the adapter seat and covered with the needle body 21 to achieve safe isolation. The purpose of the needle body 21 is 1 and FIG. 11 is a fourth preferred embodiment of the present invention, which is substantially the same as the first preferred embodiment. The difference is that the sampling unit has a second tube member 3 and a first Two pumping The second tube member 3 has a circumference around a axis and defining a chamber, a 32, a blocking rib 33, a locking seat 34 and a latching groove 35. The surrounding wall 32 An inlet end 321 having an opposite end and an outlet end 22, a large diameter section 323 adjacent to the opening end 321 , and a small & 衩 I 324 adjacent to the outlet end 322. The stop rib 33 is formed on the large diameter section 323 of the surrounding wall 32 with a large diameter 10 1279237 adjacent to the inlet end 321 , and is defined between the circumference and the % wall 32 with a gap 34 extending through the locking seat 34 . 35疋 along the axis of the +Hai, the first measuring member 4 has mutually coupled push rods 4! and - the lever 42 and the active base 43. The push rod 41 is slidably placed on the third ^ 31, and has a - back end and can be positively displaced and displaced -

The rear end face 411, and the sleeve-like member, has a base 43 for the end portion 412 which is opposite to the second tubular member 3 around the wall. The lever 〇 is composed of the pusher bar and has a front end face 421 formed at a front end and capable of being reversely biased to drive the 421 stem, formed on two sides and extending adjacent to the front end face. The limiting rib 422 is formed by extending the rib 423' along the axis parallel to the axial direction and '1=: Γ 424 arranged on both sides of the rib 423 along the axial direction. It is worth mentioning that the lever 42 has a resilient card slot 35\sheets with the ribs 423 and 34^ on the latching seat 34. When the "snap-in" and the positioning of the card ribs 424 are used in the card holder, the medical staff only needs to remove the needle sleeve 24 first. Referring to FIG. 1A, ΓιΓ holds the second tube with one hand# 3. Surrounding the wall 32 and piercing the needle body by the needle body: the blood vessel of the animal body can guide the blood along the chamber 31 of the 官 丄; η shows the phenomenon of blood return, and shows that the medical staff of the needle body 21 gold, the official 23 has entered the blood vessel correctly. , when the animal's blood pressure is not enough to make the field return 'or the appearance of the blood vessel is not clear 1279237" and need to detect puncture and pump back blood, the medical staff can hold the second tube 3 around the wall 32 with one hand, the better grip The holding method is such that the thumb and the middle finger abut against the blocking rib 33 of the second pipe member 3, and the food is applied to the front end surface 421 of the lever 42 and the lever 42 is lowered to make the rib. The ribs 424 on both sides are disengaged from the locking seat 34, so that the lever 42 drives the push rod 41 to move along the axis toward the inlet end 321 of the surrounding wall 32, thereby forming a low pressure in the chamber 31. The sucking space, when the needle 2 puncturing end 22 is correctly punctured into the blood vessel, the blood in the blood vessel is drawn back into the third member 3 to enable the medical staff to quickly and correctly determine the needle body. = Whether the two catheters 23 have entered the blood vessels correctly. Therefore, the operation of setting the intravascular catheters with one hand and measuring the blood return with one hand can improve the clinical convenience and efficiency. It is worthwhile to mention that when the lever 42 drives the push rod 41 to move along the outlet end 322 of the surrounding wall 32 to the end of the stroke, the limiting rod 422 of the two sides of the lever 42 and the second tube The locking seat on the female seat== thereby restricting the sliding stroke of the lever 42 and the push rod 41, thereby preventing the second measuring member 4 from slipping out of the second tubular member 3. When the catheter 23 is introduced into the palm of the gray tube, the needle sleeve 24 is sleeved on the large diameter section 32 1 of the second tube member 2 = the needle body, so that the safety can be achieved by covering the king (four) carving 5 The purpose of the needle 21 is The readings 13 and 14 are substantially the same as the fifth preferred fourth preferred embodiment of the present invention, except that: , /, the younger member, the needle set 2 further has a _ engaging seat 25. The adapter seat is placed on the slave 324 with a small diameter of the tubular member 3 surrounding the wall 32, and is fixed to the fixing portion 211 of the needle body 21 12 1279237, #兮+ makes the 5 脰 脰 21 and the small The pipe diameter section 324, the outlet end 322, and the chamber 31 are connected to each other. The seat 22 is detachably sleeved on the frame so that the puncture end 212 of the 4 needle body 21 can also pass through the catheter and the X needle. A sleeve 24 is detachably seated on the catheter hub 22. When the completion of the operation of the guide 23 to guide the blood vessel, the needle sleeve 24 can be directly placed on the joint seat „ according to the cliff 25, sub-covering the needle body 21, to safely isolate the needle body The purpose of 21 is to refer to Fig. 15, Fig. 2 (2), 6 Wu, Fig. 17, and Fig. 18, which are the sixth and seventh filial fathers of the present invention, which are substantially the same as the first and fifth car fathers. The difference is that The first official member 3' has a circumference around the axis and defines a chamber 31, which surrounds the wall 32" and pushes the rib %' and the back rib 37. The surrounding wall 32' has a reverse - an inlet end 321' and an outlet end, such as a large diameter section 323 adjacent to the inlet end 321, and a small diameter section 324 adjacent to the outlet end 322. The force 36 is formed on the surrounding wall 32, the large diameter section 323, and the outer surface of the crucible is horizontally opposite to the two sides and adjacent to the population 33. The returning rib 37' is formed on the surrounding wall 32, the large tube a section 323, the outer surface is adjacent to the inlet end 321' and equidistantly adjacent to the push ribs %. The second sampling member 4' has a displacementably disposed on the second tube member 3, a push rod 41 in the chamber 31'. As shown in Fig. 15 and Fig. 16, the needle body 21 of the needle set 2 is directly connected to the second tube member 3 by the fixing portion 2U. As shown in the figure, the needle body 21 of the needle set 2 is connected to the second tube member 13 1279237 p by the yoke joint 25, whereby the blood pressure of the animal body is insufficient to cause blood to flow back, or the target blood vessel is not clear. When the probe is to be probed and the blood is taken back, the medical staff holds the second tube 3 by the hand, and surrounds the wall 32, and the preferred _2 = the middle finger pulls back the second sample 4 along the axis. To the surrounding wall ^, the displacement of the _ k 321 'and the index finger against the back rib 37, and opposite to the second sampling member 4' in the second tube 3, the chamber 31, in the direction of the pumping Force ^ ί '(4) Chamber 3^ forms - (d) "sucking space, when the needle body ^ tooth end 212 is correctly punctured into the blood vessel, the liquid flows back into the second tube member 3, so that 4 people f will pump The blood in the blood-sucking officer can make the scorpion 4 people can be quickly and correctly judged. The same: Η Μ, catheter Μ has been correctly entered into the blood vessels, so it can be used for convenience and efficiency. It is worth mentioning that the medical staff can also #v~上贝也JW in the early hand holding the second tube into the catheter to introduce the catheter 23 into the blood vessel -: after the J1 fruit, the thumb Pushing the test piece 4, in the chamber 31 of the second pipe member 3, and thus the displacement of the soil ^ to J 1 and holding the push ribs 36 in the index finger, and the anti-section n Piece 4, in the first Lv 3' chamber 31, push 3 Ρ ^ ΑΛ 7 ^ knife to immediately transfer the blood of the 5 弟 二 2 tube 3 chamber to the blood test and receive i, β — λ ^ g I, post-medical testing and in the case of good aseptic operation, Li g, #, homework. Referring to FIG. 19 to FIG. 23 of the present invention, it is only the case that the eighth force of the present invention is better than that of the first embodiment of the invention. The third pipe member 5 and the - third pipette member 6, 6. Compilation early - with -. The second official member 5 has a 14 1279237 surrounding the axis and defining a chamber 51. The outer portion 52T is displaced within the chamber 51 and is in airtight contact with the surrounding wall 51. Barrier 53. The surrounding wall 52 has a reverse inlet end 521 and an outlet end 522, a large diameter section 523 adjacent to the inlet end 521, and a small diameter section 524 adjacent to the outlet end 522 formed in the large diameter Segment 523 - an inner surface and adjacent to a snap ring of the outlet end 522. The barrier member 53 is gas permeable and can block the passage of liquid, and has a fitting portion 53A formed on one side and extending toward the outlet end 522 in the direction of the axis. The third sampling members 6, 6 are respectively a short tube and a long tube, and are detachable teeth placed in the chamber 51 of the second official member 5, and respectively have an axis surrounding and defined A lumen 61, 61, a cavity wall 62, 62, a plug 63, 63' and a closure 64, 64. The lumen 61'61 has a very low gas pressure inside. The cavity walls 62, 62 have opposite front open ends 621, 621, and a rear open end 622, 622', and a card edge 623 formed on an inner surface adjacent to the rear open end 622, 622. 623,. The plugs 63, 63 are airtightly fastened to the cavity walls 62, 62, the front open ends 621, 621, and have a face member 53 facing the barrier member 53 and engageable with the fitting portion 531. A slot 631, 631. The closure members 64, 64' are closed to the cavity walls 62, 62, the rear open ends 622, 622', and the needle body 21 in airtight contact with the cavity wall 62, 62 is the solid The knot portion 211 is disposed in the small diameter portion 524 of the third tube member 5, and has a first piercing portion 213 penetrating into the chamber 51 of the third tube member 5, and the third tube member 5 is pierced. A second piercing section 214. The catheter hub 22 is sleeved over a small diameter section 524 of the third tubular member 5 that surrounds the wall 52. When in use, the medical staff only needs to unload the needle sleeve 24 first, then hold the third tube member 5 around the wall 52 with a single 15 1279237 hand, and bury the summer puncture by the ▲ needle 脰 21 brother two puncture and 14 puncture end 112 penetrated into the blood vessel of the animal body, and the blood can be guided along the needle body 2! to the chamber 5ΐ μ of the third tube member 5, so that the fluoroscopy surrounding wall 52 displays blood returning phenomenon, i Yi Yaya does not know The needle 21 and the catheter 23 have correctly entered the blood vessel. Referring to Fig. 2〇, Fig. 21 and Fig. 22, Fig. 23, when the blood pressure of the animal is not enough to make the blood flow back, or the appearance of the blood vessel is unknown, the need to detect the puncture and measure the blood return, the medical staff can The third sampling member 6 or the third sampling member 6 is placed in the chamber W of the second tubular member 5 such that the third sampling member 6, 6 and the fittings 63, 63 are fitted with grooves (3) and 631. With the barrier R, two.卩 531 肷, and push the barrier member 53 toward the needle body: the puncture segment 214 is displaced, so that the first puncture segment 213 of the needle body 21 pierces the resistance member 53 and the second sampling member 6, 6 The plug 63, 〇, can draw the blood in the blood vessel into the third sampling member 6, 6 by the extremely low pressure state in the lumens 61, 61 of the two sampling members 6, 6', The lumens 6 Μ, Μ, and inside allow the sputum to quickly and correctly determine whether the needle body 21 and the catheter sputum have correctly entered the blood vessel. After the foregoing operation of introducing the catheter 23 into the blood vessel is completed, the needle sleeve 24 can be sleeved on the large diameter section 523 of the third tubular member 5 and wrap the needle body 2 to securely isolate the needle body. For the purpose of 21, referring to FIG. 22 and FIG. 23, it is worth mentioning that since the third sampling member 6' is long in length and suitable for general centrifugal processing, the third and the The blood is used for the simultaneous collection of the blood sample. When the intravascular catheter 23 is set and the blood sample is collected 16 1279237, the third sample 6 is only required to be withdrawn along the chamber 51 of the surrounding wall 52. , the barrier member embedded in the 忒 base member 63' is blocked by the card during the displacement process, and the ring 525 is detached from the third sampling member 6, and is left in the chamber η ^, thereby忒 The second sampling unit 6 can be directly transferred to the inspection unit for subsequent measurement of the West, to improve the efficiency, consistency and convenience of medical treatment operations, and to reduce the pollution, infection opportunities, and medical waste of the I process. quantity. . Referring to Fig. 24, a ninth preferred embodiment of the present invention is substantially the same as the sixth preferred embodiment, except that: ??? The first and first-toothed segments 213 and 214 of the needle body 21 are in a separated state. The adapter seat is sleeved on the small diameter section 524 of the third tube member 5 surrounding the wall 52, and is fixed to the second piercing section 214 of the needle body U, so that the second piercing section 214 of the needle body 21 is The adapter seat 25 is in communication with the first puncture segment 213 and the chamber 51. The catheter j 32 is detachably sleeved on the adapter seat 25 such that the piercing end 212 of the second piercing section 214 of the needle body can also pass through the guide. The needle guard 24 is detachably seated on the catheter hub 22. # After completing the operation of introducing the catheter 23 into the blood vessel, the needle sleeve 24 can be directly placed on the adapter seat 25 to sub-cover the needle body 2 for the purpose of safely isolating the needle body η. Referring to Fig. 25 and Fig. 26', the third sampling member 6 further has a tie rod π. The pull rod 65 has a rod head 651 for interlocking the sealing member 64, and a shaft 652 connecting the rod head 651. The rod head 651 is formed between the rod head 651 and the shaft 652. In the absence of σ, the friend is formed on the head 651, and can be engaged with the cavity 17 1279237 wall 62, the card edge 623, the flange 654. The pull # 65, before being used, is placed on the wall of the cavity as shown in Figure 25). When using, first draw the face inside the face 61 (pulling the § hai shaft 652, pulling the head 651 ^ 4 closing member 04, by The chamber wall 62, adjacent to the 144 soil W, is adjacent to the open end 621, and is displaced toward the rear opening 1 622, and is hermetically displaced to the head 651 to the flange 65'4. The card edge (2) of the cavity wall 62 is clamped to each other, so that the head 651 and the closing #64 can be positioned on the cavity wall ^, adjacent to the rear opening ^

The position of 622 is such that the lumen 61 is in a state of extreme decompression, and after the fall, the gap (6), the shaft 652 is broken off, and the head 651 is immediately prepared to produce a sucking function. 6,. ', FIG. 27, FIG. 28 and FIG. 29 are the tenth preferred embodiment of the present invention, which is substantially the same as the first preferred embodiment, except that the intravenous catheter setter for measuring blood return is further included in the present invention. A tube 7 and a needle are turned back to the pumping unit 8. The canister 7 has a tube 72, a channel 73, and an end cap 74 that surround an axis and define a lumen 71. The tube wall 72 has a reversely extending two-one outlet end 721 and an inlet end 722, a small tube section 723 adjacent to the outlet end 721 for the catheter holder 22, and a large section 724 adjacent to the inlet end 722. A shoulder portion 725 formed between the large and small tube segments 724, 723, two convex surfaces 726 (see FIG. 30) formed on both sides, and a snap ring 727 formed on an outer surface adjacent to the outlet end 721. The guiding groove 73 is formed on the large pipe section 724 of the pipe wall 72 and extends from the inlet end 722 toward the outlet end 721 in the direction parallel to the axis, and terminates in a front positioning hole 731 adjacent to the outlet end 721, and A rear positioning hole 732 18 1279237 is formed adjacent to the inlet end 722. The cover 74 is sleeved and secured to the inlet end 722 of the tube wall 72 such that the inlet end 722 remains stable and non-deformable. . . The needle-bit pumping unit 8 has a needle holder 81 and a C-type retainer 82 slidably positioned in the lumen of the tube 7. The needle holder 81 has a convex portion 8丨丨 formed on the top surface and passing through the guide groove of the tube 7, and a concave portion formed at the center line position and extending from the front end 813 to the convex portion 811. The shape guide is only 8 12 . The convex portion 8 11 is engageable with the front and rear positioning holes 73 1 732 of the guide groove 73, respectively. The guiding groove 812 is for receiving the fixing portion 211 of the needle body 21, so that the puncture end 212 of the needle body 21 is reversely passed out of the tube tube 7 and the outlet portion 721, the catheter seat 22 and the conduit 23 . In the state of use, the needle holder 8 1 is engaged with the guide groove 811 and the guide groove 73, and is positioned at a position adjacent to the outlet end 721 of the tube 7 and the needle body The puncture end 211 passes through the outlet end 721 of the tube 7 and the conduit 23. Referring to FIG. 29 and FIG. 3, the retaining clip 82 is detachably attached to the tube wall 72 of the tube 7 and has two hooks formed on an inner surface and engaged with the convex surface 726 of the tube 7. 821, and a second limiting rib 822 formed on an inner surface and extending parallel to the axial direction. The limiting ribs 822 are disposed in the guiding groove 73 of the Tan tube 7 and are mutually opposite to the groove walls on both sides of the guiding groove 73. Thereby, the compliant clip 82 can restrain the tube 7 wall and the tube The guiding groove 73 is not expanded and deformed, so that the front positioning hole 731 of the guiding groove 73 can stably limit the convex portion 811 of the needle holder 81. It is worth mentioning that the convex portion 811 of the needle holder 81 is connected with the sampling unit. Referring to FIG. 27 and FIG. 28, taking the first tube member i as an example, the first tube member 1 is screwed into the convex portion 811 of the needle holder 81 and communicates with the needle body 21 consolidating portion 211 19 ! 279237. When the medical staff only needs to unload the needle sleeve, hold the tube wall 72 of the tube 7 and wear the needle body 21 to wear the blood of the animal body. The inside of the bowl can guide the blood back to the blood chamber U along the needle body 21, so that the fluoroscopy surrounds the wall 12. The bloody phenomenon of the shellfish and shows that the page does not return into the blood vessel. Stomach 4 person Μ needle body 21 and the catheter 23 have been correctly entered into the animal body blood pressure is not enough to make the blood back, or the target blood vessel does not look good, but need to detect puncture and pumping test in one hand holding and squeezing (four) ... Moreover, the human shell R sample can be n pieces of the haisi one official piece 1 around the wall 12 large diameter section 123 cavity i uH 'the chamber 11 in the (four) contraction and recovery process, the return to γ - / suction 'Synchronously pumping and guiding blood along the needle body 21 to show blood return: like "the inside of the chamber U of the cow 1 makes the fluoroscopy around the wall 12, the blood phenomenon of the mouth" to show that the orthodontic stone t enters the blood vessel . W shell ... ten body 21 and - the catheter 23 has been at this time 'see Figure 31, the medical staff can fix the catheter 23 and the catheter seat 22, = the blood tube inside the tube 7 , , + another hand Finger and middle finger holding side 2: with the middle finger hooking the needle seat 81 toward the inlet end of the tube 7 722 million displacement, so that the needle body 21 ★ ~ pull away from the official and the catheter 23, and the obstacle into the same official 7 lumen 71, then... This intrusion 4 u. $7 is detached from the battalion 22, Zongcheng introduces the catheter 23 into the blood vessel of the ^ -4- κ -3⁄4 ^ industry, and the catheter seat 22 Then you can connect with the slave.. 扃 扃 infusion line to carry out a drop injection. When the medical staff enters the convex portion δ11 of the needle holder 8 toward the tube 7, the direction of the needle holder 81; the direction of V22 is moved to move the spoon protrusion #811 out of the guide groove 73 before the positioning of 20 1279237?丨 71 1 system, so that the needle 2 can solve the σ of the M needle holder 81 and the (4) 7 . The seat 81 along with the first pipe member 1 μ 兮 立 立 73 73 73 73 73 73 73 73 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 71 8U and the rear positioning hole are referred to FIG. 29), and the adjacent 兮^^❹81 and the first-piece 1 are arranged such that the needle holder W is located at the I-Hing... the hidden position of the inlet end 722 follows the needle holder 8] , < only. The needle body 21 will be made in a simple manner: in the lumen 71 of the tube 7, and the hand can be made manually and manually, so that the blood vessel 3 is not exposed and the used needle body 21 is safely isolated. After the eye is placed, the injection of the venous injection catheter is set, and the needle 21 is contacted and needled, resulting in injury and sensation. 2 Figure 32' There is a cover 26. The cover 26 has a wall 261 with a % of the shaft, and a sleeve 262 formed on the wall 261 is engageable with the small tube 723 of the tube 7, and is clamped. When the needle body 21 is hidden in the tube η of the tube 7 , the medical staff can directly insert the tube . 7 small tube section into the sleeve 262 of the stone 盍 26, you #望望, c 円The cymbal 26 closes the outlet end of the tube 7 at 721°. The louver 33 is the same as the eleventh preferred embodiment of the present invention, and the difference lies in: ―弟十车乂 The tube wall 72 of the tube 7 Further, there is a ring rib 728 formed on the large diameter portion 724 and capable of blocking the needle holder 81. The ring rib 728 can cooperate with the positioning hole 731 to stabilize the needle holder 8 i in the tube 7. 21 1279237. The needle-back pumping unit 8 further has a contraction spring 83 that is received between the end cap 74 of the tube 7 and the needle holder 81 and has a confinement with the needle holder 81. The trailing end 831' and a positioning end 832 hooked to the tube wall 72 of the tube 7 and adjacent to the inlet end 722. The positioning end (4) can also be consolidated with the end cap 74 as shown in FIG. Referring to FIG. 35 and FIG. 36, when the medical staff moves the crotch portion 8U of the needle holder 81 away from the positioning hole 731 of the guiding groove 73, and the needle holder 81 is separated from the ring rib 728, the receiving is started. (4) spring 83 _ sexual recovery force ^ 吏 while the spring t 83 is contracting, the needle holder 81 along with the official member 1 is displaced along the lumen 71 of the tube 7 toward the inlet end 722, to the The needle holder 81 is positioned by being engaged with the rear positioning hole 732, and is located at a hidden position, so as to achieve the purpose of safely isolating the used needle body. 3 is a twelfth preferred embodiment of the present invention, which is substantially the same as the preferred embodiment, except that the tube 7 is further formed on the tube wall 72 of the tube 7. A holding piece 75 is adjacent to the front positioning hole 731 of the guiding groove 73, and protrudes from the tube wall 72 in the axial direction for the finger to hold. The °K needle withdrawing unit 8 has a dial control 84. The dial control is pivoted on the tube wall 72 of the tube 7 and adjacent to the guide groove 73. The positioning hole corresponds to the other side of the holding piece 75, and has a one end formed at the end and can be hooked to the needle holder 81. A buckle 841 of the portion 811 and a dial 842 formed at the other end and controlling the buckle 841 to be separated from the convex portion 811. After the medical staff finishes introducing the catheter 23 into the blood vessel, the 22 1279237 can be held: the thumb of the tube 7 abuts against the holding piece 75 as a support point, and the finger control 84 is used to force the dial control 84. The dial 842, the tribute 841 is disengaged, the upper convex portion 811, and the fixed (four) system of the needle holder 81 and the front hole 731 of the tube 7 is released. The contraction type elastic spring returns the elastic force, so that the needle holder 81 is displaced along the lumen 71 of the tube 7 toward the inlet end =, until the needle holder 81 is engaged with the rear positioning hole 2 by the convex portion Positioning is in a hidden position and at the same time the needle body 21 is concealed within the lumen of the tube 7. 38 is a thirteenth preferred embodiment of the present invention, and the eleventh preferred embodiment of the disk is substantially the same, the difference being that the guide groove 73 of the tube 7 further has a transfer section 733. The transfer section = is extended from the end of the guide groove 73 adjacent to the outlet end of the tube 7 in the direction surrounding the j-wall 72 and is formed with the front positioning hole 731 and corresponds to the holding piece 75. The retaining clip 82 of the needle withdrawing unit 8 is further disposed in the guiding groove 73 of the tube 7 and is pressed against the protruding portion 811 of the needle holder 81 to be positioned in the front positioning hole π: the private rib 823. Therefore, the retaining clip 82 can also be used to restrain the tube 7 and the wall 72 and the guiding groove 73 from being expanded and deformed, and the convex portion 811 of the needle holder 81 is blocked by the resisting rib 823 of the retaining clip 82. It is firmly restrained in the front positioning hole 731 of the guide groove. In use, the intravascular catheter 23 can be grasped only by being detached from the retaining clip 82, and after the catheter 23 is smoothly introduced into the blood vessel, the thumb of the tube 7 is held against the holding piece. 75 is used as a support point, and the convex portion 811 of the needle holder 81 is biased by the index finger, and the transfer portion 733 is separated from the front positioning hole 23 1279237 73! into the axially extending guide groove 73, and can be released as shown in FIG. The return spring of the retractable spring 'the needle holder 81 along the lumen of the tube 7? ! Displaced in the direction of the mouth end 722, until the needle holder 81 is positioned with the convex portion 732, and is located in the hidden position, and at the same time concealing the reservoir 21 in the lumen 7 of the tube 7 }Inside. Referring to Fig. 39, a fourteenth preferred embodiment of the present invention is substantially the same as the eleventh preferred embodiment, except that the two-needle set 2 further has a see-through-drawing hose 27. The drainage tube 27 is received in the guiding groove 812 of the needle holder 81, and communicates with the needle body 21 consolidating portion 211 and the first tube member diameter portion 124 that are respectively disposed in the guiding groove 812. . Therefore, the drainage hose 27 can be disposed as a window for returning blood, and can also be used to draw and guide blood back along the needle body and the drainage hose 27 to the first by the first tube member. Pipe fittings! Inside the chamber u to early = medical staff the needle 21 with the catheter 23 has correctly entered the blood vessel. - Fig. 40, Fig. 41, is a fifteenth preferred embodiment of the present invention, which is substantially the same as the twelfth preferred embodiment, and the difference is that: $ needle back pumping sheet ^ 8 has a - bullet type Spring 85. The bullet 85 is circulated to the shoulder 725 of the tube 7 and the needle holder 81 and has an abutting end 851 adjacent to the shoulder 725, and a rising end 852 of the knot . Even + by 'when the medical staff completes the operation of the guide f23 in the blood vessel%', the finger of the tube 7 can be gripped to force the dial control material, and the needle holder 81 and the tube 7 are released. The positioning relationship can release the resilience of the spring type 24 1279237 spring 85, so that the pin f85 is used with the needle seat 81, so that the needle holder 81 is connected with 52 to push the 7] Πδ海弟一官1 along the tube Tube 7 of the tube Shanghai 71 towards the entrance end 722 Lu Yuegong

Fish (four)... Displacement, to the needle holder 81 with the convex portion 8U butterfly ... &32; snap positioning, and the position 1 the needle body 21 is hidden in the lumen 71 of the tube 7: set, sub (four) will ^ In the present embodiment, Q is activated by the dial control 84, and the pop-up magazine 85 can also be manually operated in a manual manner. The rear, rear positioning holes 731, 732, or as the transition 7" Α fly as shown in Fig. 38 in a manual manner to match the 39; the setting of the second 'starts the aforementioned elastic type bullet'. Alternatively, the needle body 21 and the first official member 1 may be connected by the permeable pivot tube 27 as a window for displaying blood return, and may be punctured into the blood vessel. 'Looking ... knowing that the medical staff has been + (4) Figures 42 to 43, 44 to 45 and 46, is a preferred embodiment of the seventeenth and eighteenth aspects of the present invention, respectively, with tenth, twelve, fifteen The preferred embodiment is substantially identical except that the needle withdrawal unit 8 is coupled to the small diameter section 324 of the second tubular member surrounding the wall 32 by the projection 8 of the hub 81. Therefore, it is only necessary to withdraw the third=piece 4' to generate the suctioning effect, and achieve the purpose of synchronously sampling and returning blood when setting the intravenous-main catheter, and can also be performed by using FIG. 42 and FIG. Manual mode 'or FIG. 44, the retractable magazine 83 of the head 45, or FIG. 46, the tension spring 85 is driven in the intravenous catheter 23, and the needle holder 81 is driven to be hidden in the tube 7 'Achieve the purpose of hiding the needle body 21. It is worth mentioning that, in these embodiments, the above-mentioned spring tension spring 85 or the retractable spring 83 is activated by the dial control 84, and the front and rear can also be manually engaged as the circle 3 The positioning holes 731, 732, or the arrangement of the transfer section 733 as shown in FIG. 38, activates the aforementioned bullet-type detent or retractable spring 83. Figure 47 is a nineteenth preferred embodiment of the present invention, which can be applied to the embodiment of the invention, mainly by connecting the needle body 21 and the second tube member by the perspective person 7 3, by this, can be used as a window to control the blood return, and early to indicate that the medical staff has correctly puncture the blood into the second; see Figure 48 to Figure 49, head 5〇 to Figure 51 and Figure μ, is a tenth of the present invention. A preferred embodiment is substantially the same as the sixteenth, seventeenth and eighteenth preferred embodiments, respectively, in that the needle withdrawing unit 8 is a needle holder 81 and a second portion The tubular member is joined around the small diameter section 324 of the wall 32. In this way, it is only necessary to withdraw the third=^^' to generate the effect of the material, so as to achieve the purpose of synchronously measuring and returning blood when setting the vein ❼V official, and also by the manual mode of Fig. 48, Fig. The retracting spring 83 of Fig. 51, Fig. 52, the spring/driver of the needle holder 81 drives the needle body Η hidden in the tube 7' to achieve the purpose of concealing the needle body 21. It is to be noted that in these embodiments, the spring-loaded springs 85 658, 732 are activated by the manual rear-rearing holes 731, 732: ^ 83 ' can also be manually engaged as shown in FIG. 38 Turning on the setting of the RTM, the aforementioned spring tension spring 85 or (four) type bomb is activated. The above-described spring tension 85 26 9237 or the contraction spring 83 is activated by the dial control 84 as shown in FIG. 'Reading FIG. 53 is a twenty-third preferred embodiment of the present invention, which is applicable, and the preferred embodiment of the tenth to twenty-secondth embodiments is mainly based on the flowable softness The tube 27 connects the needle body 21 and the second tube member 3, thereby serving as a window for displaying blood return, and early indicating that the medical staff has correctly punctured the blood vessel. Referring to FIG. 54 to FIG. 55, FIG. 56 to FIG. 57, FIG. 1 and FIG. 4, 'Twenty-fourth, twenty-fifth, twenty-six, twenty-seventh preferred embodiments, I, tenth, and seventeenth The eighteenth and nineteenth preferred embodiments are substantially the same, except that the needle withdrawing unit 8 is coupled to the small diameter section 524 of the third tubular member 5 around the f 52 by the convex portion 811 of the needle holder 81. Therefore, the third pumping member 6 or the third pumping member 6 is inserted into the chamber η of the third tubular member 5, and can be pierced by the first piercing portion 213 of the hybrid body 21. The barrier member human soil member 63 is drawn into the third sampling member 6 by the extremely low pressure state of the third sampling member 6, 6 and the lumens 61, 61. In the official cavity 61, 61', when the intravenous infusion catheter is set, the synchronization is performed, the sputum is smashed by the manual mode of Fig. 54, Fig. 55, or the contraction spring 83 of Fig. 56, 57, or the elastic type of Fig. The magazine 85: the needle holder 81 is driven to hide the needle body 21 in the tube 7 to achieve the purpose of hiding the needle: 2! Alternatively, as shown in FIG. 59, the setting of the pivotable drainage guide 27 'connects the needle body 21 - the puncture segment 213 and the second piercing segment 214 ' can be used as a window for showing no blood return, and early indication The medical staff has been properly punctured into the blood vessel. 27 1279237 Referring to FIG. 56', the positioning end 832 of the retracting spring δ3 can also be hung on the tube wall 72 of the tube 7 and adjacent to the inlet end 722, or as shown in FIG. 57, the positioning end 832 can also be The end cap is % consolidated. It is worth mentioning that 'in these embodiments, the manual opening method 85 or the retractable magazine 83 is used in a manual manner, and may also be as shown in FIG. In response to the setting of the transfer section 7Μ, the above-described spring tension spring 85 or the contraction spring 83 is activated. Referring to Figures 60-64, the twenty-eighth, twenty-ninth, thirty-th, and thirty-th preferred embodiments of the present invention are substantially the same as the foregoing twenty-fourth to twenty-seventh embodiments. The invention is characterized in that: the inner catheter setter further comprises a joint group 9. The joint set 9 has a hollow and nested sleeve - a see-through joint 91 and a cover 92. The connecting seat 91 is connected to the convex portion 8 ι of the hub 81, and the toe 21 fixing portion 211 is fixedly communicated, and has a rear port 911 facing the tube 7 and 722 at an elevation angle with the axis, and A two-ribbed piece 912 is formed on the outer surface and is held by the finger. The tube cover 92 is a splicable seat 91 and the port 9U is sleeved ′ and has a front end σ 920 that is slidably connected to the splicing seat 91 and is opposite to the front port 92 〇 A rear port 921 of the canister/inlet end, and a septum 922 that covers the rear port and is breathable. - In use, the medical staff only needs to hold the tube wall 72 of the tube 7 with one hand: the puncture end 211 of the distal needle body 21 penetrates into the blood vessel of the animal body, and the blood can be guided to flow back along the needle body 21. Into the joint 91, the see-through joint 91 is shown to return blood, and the medical staff member 21 28 1279237 has correctly entered the blood vessel. The blood pressure of the field animal is not enough to make the blood flow clear, but when the probe is required to be probed and the blood is taken back synchronously, the tube cover 92 is unloaded, and the first tube member or the γ shell can be skirted-it/live, The pipe member 3, or the 兮弟一吕 member 3, or the third pipe member 5 and the joint seat: after being tightly sleeved, in the direction of the axis, the pipe _ 7 is at an elevation angle of two 11: The second hand can also hold the tube 7 in one hand: the first tube i is pulled, or the second sample is pulled, or the second measuring unit 6, 6 is inserted. In the third pipe member 5, the product (4) sucks and draws, and the wide 3 can guide the blood in the blood vessel to enter the first pipe member 1, or the second, :!, or the third sampling member 6, 6. Inside, the medical staff can quickly judge the needle body 21 and whether the catheter 23 has been stabbed into the blood vessel during the puncture. The medical personnel can also use the manual mode of Fig. 60 or Fig. 61 and Fig. 62. The retractable spring f 83 ' or the spring tension spring μ of FIG. 63 drives the needle holder 81 to drive the needle body 21 to be hidden in the tube 7 to achieve the purpose of concealing the needle body 21. Referring to FIG. 6 , the retracting spring 83 The positioning end 832 can also be hooked to the position of the tube wall 72 of the f-tube 7 adjacent to the inlet end 722, or the 疋 疋 end 832 can also be consolidated with the end cover 74 as shown in FIG. 62. Yes, in these embodiments, the Lie bosom spring 85 or the retractable spring 83 is activated manually, or as shown in FIG. 37, or the workpiece 84, or as shown in FIG. The above-mentioned spring tension spring 85 or the retractable spring 83 is activated in a manual manner in conjunction with the setting of the transfer section. Alternatively, as shown in Fig. 64, the 29 1279237 is connected by the arrangement of the see-through drainage hose 27. The person connecting the seat 91 can be used as a window for displaying blood return, and the medical staff is informed that the medical personnel have correctly penetrated into the blood vessel. The above is the thirty-second preferred embodiment of the present invention, and the twentieth The preferred embodiment is the same as the following: The needle withdrawing unit 8 has a slidable positioning in the lumen of the tube 7 and a scoop holder 86. The needle holder 86 has a circumference around the axis. And defining a channel 861 and a large channel - the first ring wall, such as a second ring soil 64, formed on the second ring wall 864 and passing through the tube 7 guide groove 73 * a P 865, a bevel 866 formed at one end of the convex portion 865, a hinge portion 867 extending from the garment 2 863 in the axial direction and fixed to the needle body 21, and a junction-connecting portion 867 disposed at the large and small holes Lanes 862, 861 and (d) are formed into a septum of the overflow hole 860 and through the convex portion 865 and connected to the "large hole 862 - column hole _. The large and small channels, 1 疋 are interconnected. The overflow hole in the center of the spacer 868 is to provide a delay in the flow of blood from the small hole 861 to the large hole 862. The first ring wall is: perspective And forming a curvature 'to achieve a good display back i function ^ Hai convex portion 865 is finally stopped at the slope 866 ' and in this embodiment is detachable with the guide groove 73 before the positioning hole 731 is locked with each other, and positioned The position adjacent to the exit end 721 of the official 7 is the same as that of the exit end 721 of the official joint. The : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : The 931 and the translucent cymbal 932 allow the large and small orifices 861 of the needle holder to communicate with the outside world in a gas-permeable manner. The medical staff only needs to hold the tube 7 with one hand, and the puncture end 211 of the needle body 21 is punctured into the blood vessel of the animal body by 30 1279237, and the blood can be guided back along the needle body 21 to the In the small hole 861 of the needle holder 86, the see-through ring wall 863 shows the phenomenon of blood return, and the medical staff member has shown that the needle body 21 and the catheter 23 have correctly entered the blood vessel. 66 is a thirty-third preferred embodiment of the present invention, which is substantially the same as the twenty-second preferred embodiment, except that the connector set 9 further has an openable cover for the port of the socket 93. A cap 94 of the 931. Thereby, after the cap 94 is opened, the large and small holes 861 are ventilated in communication with the outside, and the blood can be smoothly returned into the small hole 861. Referring to FIG. 67 and FIG. 68, it is a thirty-fourth preferred embodiment of the present invention, which is substantially the same as the thirty-second preferred embodiment, except that: the joint set further has another-seat 95, the socket 95 A peripheral wall 952 surrounding the protrusion 865 and defining a tapered bore 951, an end wall 953 connecting the end of the peripheral wall milk, and protruding from the end wall 953 with respect to the needle seat slope 866 and abutting against the slope 866 A bridge 954. When the bridge 954 of the stem 95 is in contact with the lowest point of the bevel 86 of the needle holder 86, the tapered hole 951 of the stem 95 is in airtight relationship with the outer peripheral surface of the needle holder 865, and the column hole can be closed. 869. When the medical staff rotates the seat 95' to bring the bridge 954 into contact with the higher point of the bevel 86 of the needle seat 86, the socket 95 will rise upward due to the height difference of the slope 866, so that the peripheral wall 952 and the The gap between the convex portion and the outer peripheral surface of the needle seat 86 forms a gap through which the gas can flow to relieve the air pressure in the large and small holes 862 and 861 when the blood flows back, and the blood can be smoothly returned to the small hole 861. 31 1279237 Referring to FIG. 69, a thirty-fifth preferred embodiment of the present invention is substantially the same as the thirty-second preferred embodiment, except that: the connector set 9 further has a replaceable tube holder 93, 95. One link is %. The joint 96 has a rear port 961 extending toward the inlet end 722 of the tube 7 and at an elevation angle to the axis, a gas permeable flap 962 covering the rear port 961, and a detachable ground and the needle The socket 86 is 864-sleeve-elbow 963. The needle seat 86 of the needle socket 86 can be transparently connected to the outside by the tablet (10), so as to relieve the gas C in the large and small holes 862 and 861 when the blood flows back, and the blood can be smoothly returned to the body. Inside the small hole 861. Referring to Figures 7A and 71', a thirty-sixth preferred embodiment of the present invention is substantially the same as the preferred embodiment of the twenty-second embodiment, except that the joint set 9 further has a joint 97. The joint seat 97 has a front sleeve elbow 971 and a rear sleeve end 972 which are formed at the two ends and are respectively detachably coupled to the needle holder 86 and the tube cover (10). The joint = 97 and the official cover 92 are replaceable with the aforementioned sockets 93, 95 and the joint s. The U-shaped socket 86 column hole 869 can communicate with the outside through the W 922 in the tube cover 92 to ventilate the air during the return of blood, and the returning blood can smoothly flow into the small hole of the needle holder. . A wheat reading Figure 72, when the animal's blood is not enough to make the blood flow back, or the target blood vessel appearance is unknown, and the probe needs to be probed and the blood is taken back, the medical tanker only needs to be removed from the camp. S is now seated 92, or directly replaces the tube seat % or 4 joint seat 96 with the joint seat 97, and selects the first tube member 32 1279237 1 of the pumping unit, or the second tube member 3, 3, or the first The three-pipe member 5 is sleeved with the connecting seat "rear sleeve end 972. Thereby, the first tube member 1 of the sampling unit can also be extended when the tube 7 is extended by the one hand. The second tube member 3, 3, and the second sampling member 4, 4, or the third tube member $^ the third sampling member 6, 6, simultaneously draw blood in the blood vessel into the large and small holes of the needle holder ^ In the lanes 862 and 861, the medical staff can quickly determine whether the two body 21 and the catheter 23 have correctly entered the blood vessel. Referring to Fig. 73, it is a thirty-seventh preferred embodiment of the present invention, which is related to the thirty-sixth. The embodiment of the car father is substantially the same, the difference is: the surrounding wall 12, 32, 3 of the first, second and third pipe fittings 3, 3, 3, 5 2, 52 respectively # is connected with the needle portion of the convex portion of the milk sleeve and communicates with an elbow 125, 325, 325, 526 of the column hole 869. Thereby, the medical staff only needs to be detached from the aforementioned joint seat 97. And the tube cover seat % ancient or the tube seat 93, or the tube seat 95, or the joint seat %, can be respectively connected to the first, second, third pipe member 3, 3, 5 - head 125 325, 325', 526 and the convex portion of the needle seat, and the column hole _ can be used in one-hand operation of the intravascular catheter, by means of the sampling unit I, 丨, S The returning blood enters the needle holder 86, and the blood condition can be quickly displayed, so that the medical staff can quickly determine whether the needle body η and the catheter have correctly entered the blood vessel. ★ Figure 74 to Figure 75 and Figure 76, The thirty-eighth, thirteenth aspect of the present invention is substantially the same as the thirty-seventh preferred embodiment, and can also be matched with the clinical requirement to select the joint seat 97 and the tube cover seat %, or the joint, The seat 96, or the sockets 93, 95, completes the operation of the catheter 23 into the blood vessel 33 1279237. It is also possible to select the first and second with the elbows 125, 325, 325, The official members b 3, 3, and 5 cooperate with the second sampling members 4, 4 and the third sampling members 6, 6' to simultaneously perform the action of sampling and returning blood. The difference is that FIG. 74 to FIG. 75 and FIG. The thirty-eighth and twenty-ninth preferred embodiments are shown to drive the needle holder 86 along the tube 7 by a retractable spring 83 (Fig. M, Fig. 75) and a spring-loaded spring 85 (Fig. 76), respectively. The lumen 7" month is displaced in the direction of the inlet end 722, so that the needle body 21 is concealed in the lumen 71 of the two barrels 7 for the purpose of safely isolating the needle body 21. Referring to Fig. 74, the retracting spring 83 The positioning end 832 can also be hooked to the position of the main pipe 7 and adjacent to the inlet # 722, or as shown in FIG. 75, the clamping end 832 can also be consolidated with the end cover 74. It is worth mentioning that 'in these embodiments, the dial control 84 is used to start the revolving spring 85 or the retractable spring 83, and can also be manually matched with the rear positioning hole 731 as shown in FIG. 732, or in accordance with the setting of the transfer section 733, as shown in Fig. 77, the above-mentioned spring tension spring 85 or the retractable spring 83 is activated. Referring to Figs. 77 to 81, it is the fortieth, '41, Forty-two preferred embodiments are substantially the same as the thirty-seventh, thirty-eighth, thirty-ninth preferred embodiments, respectively, in that: the &<>> a flare 729 〇', the needle hub 86 of the upper two needles to the pumping unit 8 is such that the first ring wall 863 is placed in the flare 729 of the tube 7. 'The needle of the ten, and two 21 is detachably sleeved by the adapter seat 25 by a first ring wall 863 at: ~=, so that the needle body 21 is connected to the needle holder by a large amount, and the small holes are forced to be connected to 862 and 861. Unloading the 忒 sleeve 24, can also be combined with clinical needs: the phase of the money 97 and the tube cover 92, _ joint 9 the taste seat 93, 95, complete the introduction of the catheter 23 gray It can also be equipped with the elbows 125, 325, 325, 526, W, one, two, three pipe fittings ^ half 3, 5, with the second sampling parts 4, 4', third Draw the test pieces 6, 6 , ^ into the sputum to measure the blood flow back, and quickly determine whether the needle body has been correctly inserted into the blood vessel. ···, when the medical staff unloads the catheter seat 22 and the catheter After the second finger holds the finger of the tube 7 and releases the fixed (four) system of the needle holder and the (four) cylinder 7 刖疋I 731, ^:1"^ the second needle holder 86 slips, or the heart needle The seat 86 slides so that the needle body 21 is hidden in the lumen 71 of the 5th tube 7 with the needle seat. Finally, the needle sleeve 24 is passed through the flare 729 of the tube 7 and returned. The adapter seat 25 (as shown in Fig. 78) allows the needle sleeve 24 to cover the needle body, and the tube wall 72 and the needle sleeve 24 can completely isolate the needle body 21. 79. The positioning end 832 of the retractable spring 83 is also = the position of the tube wall 72 and adjacent to the inlet end 722, or may be consolidated with the end cover 74 as shown in the figure. And, in the present embodiment, The dial control 84 is used to activate the pop-up spring 85 or the retractable spring 83. Alternatively, the front and rear positioning holes 731, 732 can be manually engaged as shown in FIG. 33, right, 35 1279237, or as shown in FIG. The method cooperates with the setting of the transfer section 733 to start the above-mentioned bullet-type projectile. As can be seen from the above, the intravenous catheter capable of sampling blood return of the present invention has the following advantages and effects: 1. The present invention has the same The catheter 23, and the blood measurement and the like, or the three functions of setting the catheter 23, sampling the blood returning to the needle body 21, etc., can not only achieve isolation of the needle body η: purpose 'and can be aimed at blood deficiency Or the target vessel with unclear appearance of the target vessel, when performing the venous intravascular catheterization setting, =::: the operation of returning blood' enables the medical staff to quickly and correctly determine the:: 21 and whether the catheter 23 enters correctly Intravascular, but can improve the efficiency, convenience and safety of clinical treatment, for emergency patients, is the key to life-saving, two treatments in prime time.肀治”. The positioning relationship between the Sea S and the 7 can be manually or elastically enabled to cause the needle holder 81, 86 to drive the needle body 21 to ask the 7 official cavity 71 to slip 'and hide the needle body 21 in the The purpose of the tube 7 to isolate the needle body 21 is not only to manipulate one hand; the f-product, the ruler is easy to use, and the needle can be hidden in a safer and more convenient way. The above is only the preferred embodiment of the present invention, and is intended to limit the scope of the practice of the invention, that is, the simple equivalent changes made by the scope and the description of the invention and 36 1279237 is within the scope of the patent of the present invention. 37 1279237 Brief description of the schema] Figure 1 is a perspective view of a general-purpose intravenous (four) guiding device of Figure II. Figure 2 is a perspective view of the current incision into the blood vessel; ^ Yangmai injection catheter guide FIG. 3 is a cross-sectional view showing a first preferred embodiment of the measurable inner catheter setter of the present invention; FIG. 4 is a cross-sectional view of the first comparative report/example. · Figure 5 疋 a cross-sectional view, the next day v v compression compression 唧The role of the bowing bow; the brother of the brothers - the preferred embodiment of the first - tube Figure 6 is a cross-sectional view of the first pipe fittings of the whistle and a guide; j TV seat Figure 7 疋 a combined sectional view A second preferred embodiment of the inner catheter setter is illustrated; the vein 8 of the blood test sample is a combined sectional view showing a third preferred embodiment of the inner catheter setter of the present invention; Fig. 9 is a cross-sectional view showing the third comparative-to-canal detachment-the first tube; ^心财-catheter seat Fig. 10 is an exploded perspective view showing the inner catheter of the hair tube A fourth preferred embodiment of the vein π ga σ and σ σ; FIG. 12 is a cross-sectional view of the fourth preferred embodiment; FIG. 12 is a cross-sectional view showing the fourth preferred _ middle guide Discharged from a catheter to a second tubular member; Figure 13 is an exploded cross-sectional view showing the fifth preferred embodiment of the catheter setter in the vein 38 1279237 of the present invention. A combination cross-sectional view of the fifth preferred embodiment of the invention; an internal guide C exploded view 'illustrating the inferior vein 5 of the present invention for sampling blood returning - a sixth preferred embodiment; FIG. 16 is the sixth preferred embodiment - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - =: Yes: a cross-sectional view ' illustrates an eighth preferred embodiment in which the S δ of the blood return can be determined. ^ 三三抽, =20 is a cross-sectional view' illustrates the test piece in the eighth preferred embodiment The tooth is placed on the third piece and the fourth piece is produced (4) the catheter seat and the first member are disengaged from the third tube member; and FIG. 22 is a cross-sectional view showing the eighth sampling member being inserted into the third tube member and generated, and drawn The function of the third figure is a cross-sectional view showing that the eighth preferred blood is collected in each of the measuring pieces; ^^ In the example, the third drawing 24 is a cross-sectional view showing the pipette setter of the present invention - the first Nine preferred embodiments; ',] intravenous blood diagram 25 is a cross-sectional view illustrating the eighth The combination of the third sampling member and a tie rod; in the parent embodiment, FIG. 20 is a cross-sectional view showing the situation in which the eighth and second second sampling members generate a low air pressure state. 1279237 Figure 27 is a cross-sectional view of the catheter setter - a tenth preferred embodiment of the blood can be drawn back to the blood of the vein 2 28 is: a sectional view of the tenth preferred embodiment of the first embodiment; a retaining clip: 29 is - top _ ' description The tenth preferred embodiment further includes a drawing, which is a cross-sectional view, illustrating the tenth aspect of the same protection effect; H, FIG. 31 is a cross-sectional view, a catheter, a preferred embodiment, a catheter seat and a tube The inside of the cylinder;] is used to pull back a needle body in a thousand-moving manner. FIG. 32 is a cross-sectional view showing a cover inserted at the outlet end; in the embodiment, the tube is an inner guide: 3 is a cross-sectional view, illustrating that the present invention can be Sampling the blood returning veins. Also set - tenth - preferred embodiment; Ge bomb! FIG. 2 is a cross-sectional view showing another fixed state of the contraction-type yellow in the tenth preferred embodiment; τ κ mesh 35 is a top view, said with a catheter detaching-tube; °' A preferred embodiment of the present invention is a cross-sectional view showing a catheter holder and a catheter being detached from a battalion in a tenth preferred embodiment, in which the TV is in the tube; D" , s", spring pullback - needle concealed tube" two is a two-page view 说明 'illustration of the present invention can be measured back to blood _ e 0 and then set a younger twelve preferred embodiment; Figure 38 is a butyl The present invention is a thirteenth preferred embodiment of the intravenous catheter 40 1279237 tube setter which can be used for sampling blood returning. FIG. 39 is a cross-sectional view showing a tenth embodiment of the intravenous catheter disposer capable of sampling blood return in the present invention. Figure 40 is a cross-sectional view showing a fifteenth preferred embodiment of the intravenous catheter setter for withdrawing blood in the present invention; and Figure 41 is a cross-sectional view showing the fifteenth preferred embodiment The middle conduit seat and a conduit are unloaded from the tube, and the spring is pushed by the spring The body is concealed in the tube; Fig. 42 is a sectional view showing a sixteenth preferred embodiment of the intravenous catheter setter for withdrawing blood in the present invention; and Fig. 43 is a cross-sectional view showing the sixteenth In a preferred embodiment, a catheter hub and a catheter are detached from a tube; FIG. 44 is a cross-sectional view showing a seventeenth preferred embodiment of the venous catheter setter for withdrawing blood in the present invention; FIG. 45 is a combination 1 is a cross-sectional view showing another fixed state of a retractable spring in the seventeenth preferred embodiment; and FIG. 46 is a cross-sectional view showing an eighteenth preferred embodiment of the intravenous catheter setter for withdrawing blood in the present invention. Figure 47 is a cross-sectional view showing a nineteenth preferred embodiment of the intravenous catheter setter for withdrawing blood in the present invention; and Figure 48 is a sectional view showing a portion of the intravenous catheter setter for withdrawing blood of the present invention. A twentieth preferred embodiment; FIG. 49 is a cross-sectional view showing a catheter holder and a catheter being detached from a tube in the twentieth preferred embodiment; 41 1279237 The invention can extract the _M-+Q blood of the inner catheter setter, and the venous brother of the eleventh preferred embodiment; the cross-sectional view of the figure ,, illustrating the other type of the second eleventh household-contracting bomb* Fig. 52 is a cross-sectional view showing a preferred embodiment of the venous catheter of the present invention; Fig. 53 is a cross-sectional view showing The twenty-third preferred embodiment of the tube setter of the present invention; the intra-pulse map 54 is a partial sectional view, and the intravenous catheter is set to cry for each month. A twenty-fourth preferred embodiment; Fig. 55 is a cross-sectional view showing that the twentieth tube holder is in the main TU/pregnancy only one of the guides: one is unloaded from the tube. And manually pull back - needle (four) hidden in the tube; ten body ^ Figure 56 is a partial sectional view of the monthly vein guide camp setter - twenty-fifth better (four);; 57 is a partial sectional view showing another fixed form of a retractable magazine in this example; ^ soil "Figure 58 is a part A cross-sectional view showing a first "return of blood in the intravenous catheter setter of the present invention, and a preferred embodiment; Fig. 59 is a cross-sectional view showing that the tube is placed in a bloody test. The preferred embodiment of the intravenous catheter and the sigma of the sigma is shown in Fig. 60. Fig. 60 is a partial sectional view, ^ ϋ: ^ ^ σ 兄 本 本 本 本 本 本 本 本 本 本 本A twenty-eighth preferred embodiment; Fig. 61 is a partial ninth preferred embodiment of the 42 1279237 intravenous catheter setter for measuring blood return in the present invention; Fig. 62 is a A partial sectional view showing another fixed state of a retracting spring in the twenty-ninth comparative example; and FIG. 63 is a partial sectional view showing a third of the venous catheter setting device of the present invention Ten preferred embodiments;

Figure 64 is a cross-sectional view showing a thirtieth preferred embodiment of the intravenous catheter setter for withdrawing blood of the present invention;

Figure 65 is a combination cross-sectional view showing the thirty-second preferred embodiment of the measurable blood returning catheter setter of the present invention; + ^ ... 疋 - combined sectional view 'illustrating the intravenous catheter setter for measuring blood return in the present invention - Thirty-third preferred embodiment; internal guide = 7 placed view, illustrating the in vivo intravenous V & A preferred embodiment of a thirty-fourth preferred embodiment; a two-six 6δ_: a combination cross-sectional view 'illustrating the gap between the two sockets of the thirty-fourth preferred embodiment for forming a gap for gas circulation; A third preferred embodiment of the present invention for measuring the blood returning vein 5 is also set. FIG. 70 is a sectional view showing the third embodiment of the extractable inner catheter setter of the present invention. Sixteen preferred embodiments; 'pulse = m cross-sectional view, illustrating the thirty-sixth better

The & seat and a catheter are unloaded from a tube; V Figure 72 is a partial cross-sectional view showing the third case - the needle holder can be connected to each other by means of a joint; 43 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 The thirty-eighth preferred embodiment of the venous catheter setter for returning blood; Fig. 75 is a partial sectional view of the third preferred embodiment 说明1 - another fixed state of the retractable spring; Figure 76 is a sectional view showing a part of the combination, and a thirty-ninth preferred embodiment of the intravascular catheter setter which can be used for the blood return of the present invention; the second guide to the view 'illustrates that the present invention can measure the blood returning state. Forty-four preferred embodiments; a seat and two-way cross-sectional view 'in the fortieth preferred embodiment - the catheter is detached from a needle seat; a vein = partial combination sectional view' illustrates the invention can be used to measure blood return settings A forty-first preferred embodiment of the device; Ο Γ ν 0 例 - 收 收 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的;, mesh |, catheterization of the iliac vein - is a forty-second preferred embodiment of the sampling of blood return. Attachment—· Letter 2〇〇4年丨"19曰The Open Meeting of the American Medical Association Annual Meeting 44 1279237

[Main component symbol description] 1 ... first pipe member 3 *... ...... second pipe member 11 ... chamber 31 ... ... chamber 1 c ·, - ... surround wall 32 ... ... ... around the wall 12 1...closed end 321 - ... inlet end 122 ... + ... outlet end 322 - ... outlet end 123 ♦ ... large diameter section 323 - ... · large diameter section 1 2 4 ... small diameter section 324... ...... small diameter section 125 * ... elbow 325 " 2 ... needle set 3 3..., ... stop rib 2 1 ... ... needle body 34 ... "..., locking seat 2 11 ... * ... Fixing portion 341 - ... gap 2 1 2 * ... puncture end 35 .... ... card slot 2 1 3 * ... first puncture segment 3, ... ••... second tube member 2 14 , ... second puncture segment 31,.* ... chamber 2 2.........catheter seat 32,..."around wall^3****^* ...catheter 321' * ..."inlet end...needle sleeve 322,...export End 2 4 ' ... needle sleeve 323,, ..... large diameter section 25...1 ... adapter 324, " ...... small diameter section 2 6 * ... cover 325, * »...... elbow 2 6 1...... ... slab 36,... ...... Pumping the striker rib 262 ...... ... bush 37, pushing the stopper rib 27 ... ...... ... ......... drainage hose 4 μ ... ...... Chouce second member 451,279,237

^ X- ...... putter, 62 ♦...... cavity wall 411... f... rear end face 621...... ... front open end 4 1 2... 4 front end 6 2 2 ... ... rear open end ^ ^ 1 <... Dial 623 ------ • * Card edge 421... ----Uranium end face 6 3...·...plug 422... •...Restriction rib 6 3 1......back groove 423... ribs• • Closure 424... ... ♦ rib, ¥ * * <, V · * Ψ ... third test piece ^ « *. Ο * ί ---- Piston 6 1 ' ” lumen 4”... •... Drawer 62, ... cavity wall / | 1 , sc * » • ... push rod 621, ... front open end 5 ... ... ... third tube 622, ... rear open end 5 1 ... chamber 623, ...卡缘* Λ. «· ^ 4·; 1... around the wall 63'""* ...plug 5 2 1... '...inlet end 631,...back groove 522 ..., ...exit end - closure 5 2 3 '... large diameter section 6 5 ' - pull rod 5 2 4 ..., ... small diameter section 651, ... head 525 ... ' ... clamping ring 652, ... shaft 526 ... elbow 653 ,...* ... notch 53 barrier 654, ... flange 53... rear joint 7... ...tube K *· !t « Ά * * ...the third pumping 71 , ... lumen 1 Ϋ ^ V ^ Ϋ ^ ... lumen y 2 *»»**» * ... wall 46 1279237

72b... <...export end 722... ...inlet end 723... ... small pipe section 724... ...large pipe section 725... *...shoulder 726... ...-convex 727... Snap ring 7 2 8... ...... ring rib 729... Η... flare... guide groove 731... ...^ front positioning hole 732 ...' -... rear positioning hole 733 ..., transfer section 74... -... end cover 75... •...by holding piece;...needle body pumping unit δ 1 ^9 ^ ^ ^4 1...needle seat 811 - ... convex part 8 12,... guide groove 8, 13, front end 8 2 ... retaining clip 8 2 1 ..., ...cart] 8 2 2 ...' ... limit ribs 8 2 3 ..., ... barrier ribs 8 3......elastic phthalocyanine 8 3 1 ♦......towing end 8 3 2...♦...positioning end 8 4......... Dial control 841".....Snap 842 - - ♦ dial 85 -"...spring 8 5 1...♦...buter end 852 ...boom end 8 6 "·needle 860...·overflow hole 861...·... small hole 862 large hole 863...—first ring wall 864...·second ring wall 865*—" convex portion 86ό, ... slope 8 6 7, connecting segment 8 6 8 ... 8 6 9 •......Post hole 9 »Connector set 91.........Joint seat 9 11> Rear port 912.........ribs 47 1279237

9 13... ...... elbow 9 2'... ...... tube cover 920... ...... front port 921 - ... rear port 922 - * - cymbal 93...* 931 - ...... port 93 2 - ...... sepal 9 4 > ...... Cap 95 ... Cylinder 951 - ... Cone 952 - • ... Zhou 953 "" ... end wall 954 - ... bridge 9 6..., ... connection seat 961 " ... after Port 962 - "...month horse 963 - 9 has > ..., ... link 971... ...... front socket elbow 972... ...... rear socket

Claims (1)

1279237 X. Patent application scope: 1. An intravenous catheter setter capable of measuring blood return, comprising: a sampling unit capable of generating σ, that is, a suction function; and a needle group having a connection with the sampling unit and being placed at a needle body outside the sampling unit, a catheter seat detachably connected to the sampling unit, and a flexible catheter 连结 connected to the catheter holder for the needle body to pass through. The intravenous catheterization device of the present invention, wherein the sampling unit has a first tubular member having a surrounding wall surrounding an axis and defining a chamber, the surrounding wall a closed end having an opposite end and an outlet end, a large diameter section adjacent to the closed end, a small diameter section adjacent to the outlet end and coupled to the conduit seat, the large diameter section being elastically plastically deformable Compressing and restoring the chamber 'actuates the suction and draw in the chamber. An intravenous catheter setter capable of sampling blood return according to claim 1, wherein the sampling unit has a second tube member and a second sampling member, the second tube member having an axis defined around the axis a surrounding wall having a reverse end and an outlet end, a large diameter section adjacent the inlet end, and a small diameter adjacent to the outlet end and coupled to the guide seat And the second sampling member is slid in the large official diameter section of the second slab and is in airtight contact with the circular wall of the circular body, and the squeezing attraction can be generated in the chamber. According to the third aspect of the patent application, the venous guide setting device for measuring blood return is _, the second sampling member has a push rod 49 1279237 2 connected to each other, and a piston, the push rod Is slidably disposed in the chamber of the second "Niuwei% wall large official diameter section", and has a front end portion that is sleeved with the piston to make airtight contact with the crucible, and extends out of the chamber Forming a rear end surface that can be positively displaced by a rear end, the lever is extended by the rear end of the push rod, and has a front end and can be reversely biased to drive the push rod displacement A front end face. • 5. ^ In the scope of the patent scope, the venous guide that can be sampled back to blood is set to 3' where 'the second tube has more - the card holder and the card slot card a stop groove formed on the large diameter section of the surrounding wall adjacent to the outer edge of the inlet ^, and defining a gap between the surrounding wall for the passage of the lever - the card slot is continuous in the direction parallel to the axis The lever of the sampling member is elastically rotatable relative to the locking seat, and has a W--top surface and parallel The axial direction extending ribs and (4) the axial direction (4) in the strip two Lang number radial parallel card - one person field ^, 疋 (four) ribs and the card seat of the card holder ° ' and the positioning of the card ribs The card is on the seat. • According to the fifth paragraph of the patent application scope, the private side of the tube is crying, and the veins of the sputum are measured by the sputum: 2, 2 'The second rod of the second sample is formed in the The two limiting ribs of the end faces of the two cores are displaced to the end point away from the needle body, and (4) the sun is pushed and stopped. The side card stops are mutually blocked. 7. The tube according to the fourth application of the patent application scope a setter, wherein the venous guide large diameter section of the Hendy-return blood-outer surrounding wall further has a second-cast 50 1279237 rib rib formed on the opposite sides of the surface of the surface and adjacent to the intermediate portion The two sides of the axial direction of the blocking rib can be abutted against the finger, and the force is applied in a direction opposite to the displacement of the second sampling member in the second tubular member, so that the second tubular member maintains a stable state. Intravenous guideline/re-measured as the third item mentioned in the scope The second sampling member has a push rod and a piston, and the "mounting rod is slidably disposed in the chamber of the second tubular member surrounding the large diameter section of the wall" and has a sleeve for engaging the piston The end portion of the air-tight contact around the wall and a rear end surface extending from the lumen and formed at a rear end and capable of being displaced by force, for the finger to be displaced. 9 · According to the scope of claim 8 An intravenous guide setter for measuring blood return, wherein the surrounding wall of the second tubular member further has two push-pull ribs formed on the opposite sides of the outer surface of the large-g hollow section and adjacent to the inlet end Opening a spur rib on an outer surface of the large diameter section adjacent to the inlet end and equidistantly adjacent to the dedicated push rib, the push ribs being held by the finger and opposite to the The second sampling member applies a force in a pushing direction of the second tube chamber, and the back pumping rib is adapted to be biased by the finger and opposite to the second sampling member to apply a force in the pumping direction of the second tube chamber. 10. The intravenous guide setting device according to claim 1, wherein the sampling unit has a third tube member and a third sampling member, the third tube member having an axis and Defining a surrounding wall of a chamber, and a barrier having a reverse inlet end and an outlet end, a large diameter section adjacent the inlet end, and adjoining the outlet end and the conduit seat a small diameter section of the joint, the barrier member is displaceably received in the large diameter section, and is permeable to gas and blocks blood passage, 51 1279237 The third sampling member is detachably disposed in the chamber of the third tubular member, and has a lumen that can instantly form a state of extremely low pressure, and the needle of the needle group is placed in the first a first piercing section in the three-tube chamber, and a second member of the second member, the catheter seat and a second puncture segment of the catheter, the first measuring member 滑 slidable in the cavity of the third tubular member Indoorly pushing the blocking member to move toward the first puncture segment of the needle body, so that the first puncture segment of the needle body has the ratcheting member 4 and the third sampling member, so that the needle body and the third sampling member are extremely low pressure The lumens of the state are connected, thereby creating the effect of sucking and withdrawing. According to the claim 10 of the scope of the patent application, the intravenous catheter can be measured and returned to the blood, wherein the needle group further has a socket seated around the diameter of the third tube member, the needle The first first body and the second puncture segment are in the form of a knife-shaped dislocation. The second puncture segment is coupled to the adapter seat by a consolidating portion, and the catheter seat is sleeved on the engagement seat to make the needle body The catheter is threaded out of a puncture end opposite the fixation portion. According to claim 10, the intravenous tube, the device, and the armor of the third tube have a snap ring formed on the inner surface of the large diameter section, and the limitation is limited. The barrier can only be displaced between the needle body and the click ring. 13.= According to the scope of the patent scope, the smear of the measurable back & wherein the far second pumping member has a cavity wall surrounding the axis and a cavity of the brick cavity, a plug And a closure member having a reverse-a front open end and a rear open end, the plug being airtightly locked in the cavity after the closure member is inserted into the lumen from the front end In front of the wall, the closure is airtightly slidable within the lumen and encloses the card 52 1279237 at the rear open end of the chamber wall to create a very low pressure condition. 14. An intravenous catheter setter for measuring blood return according to the scope of claim π, wherein the third sampling member further has a pull rod, the pull rod being movably disposed by the rear open end of the chamber wall Inserting into the lumen, and engaging the closure member, the closure is displaced from the position of the lumen adjacent to the front opening end and the plug member toward the rear opening, and the positioning is clamped adjacent to the cavity wall The position of the open end causes the extremely low pressure state to be formed in the lumen immediately. According to the 14th item of the patent scope, the intravenous and sputum can be measured. Further, wherein the cavity wall of the third sampling member has a card edge formed on a surface of the household and adjacent to the rear open end, and the lever has a head for interlocking the hinge member, and the head is connected And a portion of the shaft that passes through the tube and a gap formed between the head and the shaft, the word T has a margin that can be reduced with the card edge card, by which the shaft is pulled The head and the closure are hermetically displaced from the opposite end of the lumen adjacent the front open end to the plug member toward the rear open end, such that the flange of the head is locked to the trailing edge of the cavity wall The lack of π breaks away and discards the shaft, and the instant bamboo is formed into a lumen of a very low pressure state. 16) According to the scope of the patent application, the intravenous _B a of the mouth blood is set to 'the t', the sampling unit has a tube, and the tube is surrounded by: - axis and defines a chamber - surrounding the wall, the surrounding wall has a large diameter section and a small diameter section of the connection ^ * strike - a needle of the beta needle group has a fixed connection in the small diameter section of the official part a portion, and a catheter piercing end of the catheter. 53 1279237. The intravenous guide setting device according to claim 16 , wherein the needle set further has a needle sleeve, and the needle sleeve is sleeved on the official part. On the diameter section, and covering the needle body, the catheter seat and the catheter. 18. The intravenous catheter B" according to claim 1 of the scope of the patent application, wherein the sampling unit has a tube member having a chamber surrounding an axis and defining a chamber Surrounding the wall, the surrounding wall has a large diameter pipe segment and a small pipe diameter segment, and the needle group further has a connecting seat disposed on the small pipe diameter segment of the pipe member and disposed for the conduit seat. The needle body has a fixing portion confined with the coupling seat, and a piercing end of the catheter sleeve and the catheter is pierced to connect the needle body with the small diameter section of the tube member. 19. Patent No. 18 The intravenous catheter 2, which can be used to measure blood return, is: 'where the needle set has a needle sleeve, the needle sleeve is detachably placed on the catheter hub' and covers the needle body and the catheter, and After the catheter socket is detached from the adapter seat, it can be directly placed on the adapter. 20. An intravenous catheter setter for measuring blood return, comprising: a tube wall end of a lumen and an inlet end along the axis of the cylinder, having an axis surrounding and defining a guide groove, The tube wall has an oppositely extending end, the guide groove is formed on the tube wall and extends from the inlet toward the outlet end; is positioned in the lumen adjacent to the outlet end of the tube:: slidable Moving the convex portion of the tube guide groove, the convex portion is slidable along the lumen to the adjacent inlet end according to the external force H to the through hole 4; a sampling unit is convex with the needle holder a portion coupled to generate a sucking action; and a needle set having a needle body coupled to the needle holder and communicating with the sampling unit, and a detachably sleeved one of the tube and the needle holder a catheter hub, and a flexible catheter that engages with the catheter hub for the needle to pass through, the needle body is slidable with the needle hub adjacent to the inlet end of the cartridge and is hidden within the cartridge . Lu 2 1 · An intravenous catheter setter capable of sampling blood return according to the scope of claim 2, wherein the guide groove of the tube is formed with a front positioning hole adjacent to the outlet end, and is formed adjacent to the a rear positioning hole at the inlet end, . The thimble protrusion 疋 can be seated in the front positioning hole, and is positioned adjacent to the exit end of the official cylinder, and is driven by an external force to slide along the guide groove to engage with the rear positioning hole, and is positioned adjacent to The position of the inlet end of the tube. 22. An intravenous guide according to claim 21, wherein the tube wall further has a small section adjacent to the inlet end. And a shoulder formed between the large and small officials, the needle withdrawing unit further has a spring, the spring is compressed and accommodated between the shoulder of the tube and the needle seat, so that After the external force of the needle seat is driven away from the front positioning hole, the needle seat and the needle body are displaced toward the rear positioning hole by the early returning force of the spring. The invention relates to an intravenous guide setr capable of sampling blood return according to item 2 of the patent scope, wherein the tube further has an opening that closes the inlet end of the tube wall and the needle is returned to the iq / 7L early The utility model further has a 纟彳g-type elastic cultivating, wherein the volcano is 55 1279237 is stretched and placed between the tube end cover and the needle seat, has an end fixed with the needle seat, and is hooked on the tube The other end of the inlet end of the wall is driven by an external force to be disengaged from the front positioning hole, and is displaced by the elastic restoring force of the elastic body to move the needle holder and the needle body toward the rear positioning hole. The intravenous catheter setter according to claim 21, wherein the tube further has an end 盍 closing the inlet end of the tube wall, and the needle withdrawing unit further has a retracting spring The magazine is received between the end cap of the tube and the needle seat, and has one end fixed to the needle seat and the other end fixed to the end cover, so that the convex portion of the needle seat is received After an external force is driven away from the front positioning hole, the needle seat and the needle body are displaced toward the rear positioning hole by the elastic restoring force of the spring. 25. The intravenous guide set according to claim 21, wherein the guide groove of the tube further has a transfer section, the transfer section is adjacent to the tube outlet by the guide groove. One end of the end extends in a direction surrounding the wall of the tube, and the front positioning hole is formed. The intravenous catheter setter according to the invention of claim 5, wherein the tube has a retaining piece formed on the wall adjacent to the transfer section On one side of the front positioning hole, and the directional dog extends out of the tube wall and extends along the axis direction, the holding piece is for holding the finger, so that the convex part of the needle seat is received, and the force is released from the front positioning hole. At the same time, the steady state of the tube can be maintained. b Intravenous guidance for blood withdrawal according to item 21 of the patent application scope The clip is a detachable ring covering the wall of the tube tube, see a retaining clip, and has a second limiting rib extending in a direction of 56 1279237, the inner limiting rib 'and the guide The groove walls on the two sides of the groove are mutually blocked and the guide groove is not expanded and deformed. The surface and the axis parallel to the axis are placed in the tube guide groove, and the tube wall 28 can be restrained. According to the second aspect of the patent application, the blood can be sampled and returned to the blood. The needle back pumping unit further has a dial control, and the dial control is pivoted on the side of the answer % μ , “ , , , and the shovel adjacent to the guide groove and/or is formed at one end and/or A buckle and a 幵 y which can be hooked to the convex portion of the needle seat can be controlled by a dial 29 which can control the buckle to be separated from the convex portion. In the vein guide, the tube has a holding piece formed on the wall of the tube tube. The holding piece is adjacent to the guiding groove, and the positioning hole corresponds to the pivoting part of the dial control The other side of the tube wall extends radially and extends in the axial direction. The sinus piece is held by the finger, so that the dial control is forced to release the needle seat away from the front positioning hole. The steady state of the tube. 30. An intravenous catheter setter for measuring blood return according to the scope of claim 2, wherein the needle set further has a _needle sleeve, and the needle sleeve is detachably sleeved on the tube wall And covering the needle body and the catheter. 3 1 · According to the second aspect of the patent application, the intravenous guide can be used to measure blood return, wherein the needle set further has a needle sleeve, and the needle sleeve is detachably sleeved on the catheter socket. Upper and covering the needle body with the catheter. 32. An intravenous catheter setter according to the second aspect of claim 2, wherein the tube wall further has a card formed on an outer surface 57 1279237 a _ near the π end a ring, and the needle set further has a cover which is detachable from the needle when the needle is retracted and hidden in the f-tube, and has a wall that can be placed on the _ plane And an annular sleeve formed on the wall of the plate and engageable with the wall of the tube tube, the sleeve having a ring formed on the surface of the 0 and being engageable with the tube retaining ring. 33. An intravenous catheter setter for withdrawing blood according to claim 2q, wherein the needle hub has a first annular wall surrounding the axis and defining a small bore and a large bore And a second annular wall, and a column hole extending through the convex portion and communicating with the first large hole, the large and small holes are in communication with each other. The first annular wall is transparent to the blood returning in the small hole, and has The function of returning blood is quickly displayed, and the second channel is for accommodating blood returning from the small channel. 34. An intravenous catheter setter according to claim 33, wherein the tube wall further has a large section adjacent the inlet end and a small section adjacent the outlet end, and The first and second ring walls of the needle hub are disposed in the large pipe section, and have a connecting section extending from the first ring wall in the axial direction and consolidating with the needle body, the connection a tooth is disposed in the small pipe segment, the convex portion protrudes radially from the second ring wall and passes through the tubular guide groove, and the sampling unit has an elbow that can be sleeved with the convex portion, so that the tooth is After the pumping unit is airtightly sleeved with the convex portion, it is at an elevation angle with the tube along the direction of the 5th axis, which is convenient for the holding operation. 35. The intravenous guide set according to claim 33, further comprising a joint set having a hollow joint, the joint being detachably coupled to the needle The convex portion of the seat is sleeved and communicated with the needle body of the needle set of 58 1279237, and has a rear end abutment at an elevation angle to the axis, and the port is airtightly sleeved, and the angle is convenient for the gripping operation. Extending toward the inlet end of the tube, the port is provided for the sampling unit to be in line with the tube in the direction of the axis. 3. According to the patent application, the tube setter, wherein a piece of gas is used. An intravenous guide for measuring blood return, as described in Item 35, the connector is formed at the rear port and is permeable ~ Kang Shenming patent | & coffers 35 items can be measured back to the blood of the intravenous guide 1: state 'where' the joint group has a hollow tube cover, the official cover has a detachable The front port of the connection socket is a rear port opposite to the front port, and a ventable January piece that covers the rear port. 38. An intravenous catheter setter for withdrawing blood according to claim 35, wherein the joint has a set of ribs formed on opposite sides of an outer surface and held by fingers. An intravenous catheter setter capable of sampling blood return according to claim 5, wherein the joint set further has a seat that can replace the joint. The stem is detachably mounted on the joint. The convex portion of the needle seat has an open port and a gas permeable flap formed at the port. 4. The intravenous guide settable for blood return according to claim 39, wherein the stem further has a cap that closably closes the stem port. 41. The intravenous catheter setter according to claim 39, wherein the needle hub further has a 59 1279237 bevel formed at one end of the convex portion, and the convex portion terminates at the inclined surface And forming a 隹 隹 隹 官 官 官 σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ σ a bridge on the slope. According to the scope of claim 33, the venous guide capable of sampling blood return, wherein the official cylinder has a flared portion adjacent to the outlet end, and the needle assembly is further fixed to the needle-fixing portion. The adapter seat is detachably seated on the first ring wall of the needle seat after the flaring is inserted, and the catheter seat is detachably sleeved on the adapter seat. 43. The intravenous sigma σ of the measurable blood return described in item 42 of the t射 patent range is further defined, wherein the needle set further has a needle sleeve which is detachable: placed on the catheter The sleeve is covered with the needle body and the catheter, and after the g$g seat is separated from the adapter seat, the tube is flared and placed in the lumen and directly placed on the adapter seat. . 44. ίί 申 利 帛 帛 帛 帛 帛 帛 静脉 静脉 静脉 可 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉a tube segment, the needle holder is disposed between the large and small tube segments, and has a concave guiding groove formed on a top surface and extending from a front end to the convex portion, the needle body of the needle group has a receiving and a card a consolidating portion fixed in the 3 channel and communicating with the sampling unit, and a reverse piercing end of the name & cylinder and a puncture end of the catheter, the catheter socket being detachably sleeved In the small tube section of the tube. The intravenous catheter and the mouthpiece for measuring the blood return according to the 44th item of the patent scope are further configured, wherein the needle group further has a 5 turbulent flow which is connected to the needle body consolidation portion and the 60 1279237 sampling unit and is fluoroscopy The hose, the drainage hose, is placed in the guide groove to quickly display the blood return condition. 46. The intravenous catheter setter according to claim 2, further comprising a joint set having a joint that is hollow and coupled to the needle boss, the joint a rear port that communicates with the needle body and has an elevation angle toward the inlet end of the tube and an elevation angle with the axis, and the air sampling unit and the connecting seat are airtightly sleeved, and along the axis direction The tube has an elevation angle for easy grip operation. 47. An intravenous catheter setter according to claim 2, wherein the sampling unit has a first tubular member having an axis surrounding an axis and defining a chamber. a surrounding wall having a closed end and an outlet end, a large diameter section adjacent to the closed end, and a small official diameter section adjacent to the outlet end and coupled to the convex portion of the needle cliff, The chamber is in communication with the needle body on the needle seat, and the large diameter section is elastically plastically deformable to compress and restore the chamber, so that σ, that is, suction and suction, is generated in the chamber. 4 Μ 据 静脉 静脉 据 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉And defining a chamber white / 1 around the wall, the surrounding wall has a reverse inlet end and an outlet end, a large diameter section of the splicing e-portion end, and adjacent to the outlet end and with the word ^ a small-diameter section, the second sampling member is slid in the large official section of the first & and is in airtight contact with the surrounding wall, and can be sucked and drawn in the chamber. . " 61 1279237 According to the 48th item of the claimed patent scope, the intravenous guide σ of the blood can be taken back, wherein the second sampling member has a push rod and a cup connected to each other, and a piston, The push rod is slidably disposed in the chamber of the second: member surrounding the large diameter section of the wall, and has a front end portion that is sleeved with the piston to be in contact with the enclosure 7 and extends out of the chamber Forming a rear end face that can be positively displaced by the rear end, the lever is extended by the rear end of the push rod, and has a front end and can be reversely biased to drive the push rod A front end of the displacement. 〇 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据 依据The large diameter section is adjacent to the outer portion of the inlet: and defines a space between the surrounding wall for the passage of the lever: the card slot extends through the locking seat in a direction parallel to the axis, and the second sampling The lever of the piece is upwardly slidable relative to the locking seat, and is pressed downward by 70 into a top surface and extends along the parallel direction of the vehicle by a rib: = (four) line direction is arranged on two sides of the rib The number of the radial parallel card is oriented, and the rib and the card slot of the card holder are σ, and the card rib is positioned to stop on the card holder. 5 1 · According to the application rm ^ From the upper part of the 50-item, the intravenous guide setter that can be used to measure the blood return, J: Φ # _ ” The treatment pulsator V. side and adjacent to the front end face::: The limiting rib formed on the side of the second direction away from the needle body (four) is stopped at the push rod. When the direction is displaced to the end point, it is mutually blocked with the card holder 52. According to the scope of claim 49, the vein guide can be used to measure blood return, and the surrounding wall of the second tube member is more formed. In the large official section, an outer surface is horizontally opposite to the two sides and adjacent to the intermediate portion of the two stop ribs 'the axial direction of the blocking ribs: the side is available for the finger to reach #, and: = the second sampling member is The direction of displacement in the second tube is biased to maintain the second tube in a stable state. 53· = the scope of the application of the 帛 所述 所述 可 可 的 的 的 的 的 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉 静脉The second tubular member surrounds the inner wall of the large diameter of the wall and has a front end portion which is sleeved with the piston to be in airtight contact with the surrounding wall, and a front surface which is formed at a rear end and can be positively displaced and displaced Finger force displacement. 54. The application of the special scope 帛53 can be measured back to the ▲ intravenous V: state 'where the surrounding wall of the second tubular member is formed on the outer surface of the large official section of the horizontal two sides and a two-feed rib adjacent to the inlet end, and a return rib formed on an outer surface of the large-diameter section adjacent to the inlet end and adjacent to the pushing ribs, the push-stop ribs being arbitrarily held The force is applied in a direction opposite to the pushing direction of the second sampling member, and the throttle rib is provided for the finger to abut against and opposite to the pumping of the second sampling member. According to the scope of claim 2G, the venous tube setter capable of sampling and returning blood, wherein the sampling unit has a third tube member and a third pumping member, the third tube member has an axis around the axis. The heart returns to a surrounding wall of a chamber, and a barrier member, which surrounds the wall, and the long-awaited - inlet end /, an outlet end, a large tube adjacent to the inlet end, and adjacent to the outlet 63 1279237 a small diameter section of the needle holder convex portion, the barrier member is disposed in the large section and is permeable to air and blocks blood passage: the third sampling member is detachably inserted In the chamber of the third tubular member, the chamber has a lumen that can instantly form a very low pressure state, and the needle of the needle set has a first puncture segment into which the tooth is placed in the chamber of the third tubular member, and two needles. a second sampling member that is coupled to and passes through the tube, the catheter holder and the catheter, and the second sampling member is slidable in the chamber of the third tubular member: the first blocking member is first toward the needle body The puncture segment moves to cause the needle body: the puncture segment to pierce the barrier member and the third pomelo test piece The needle body: X is connected to the official cavity of the first sampling member, thereby generating the function of D, which is the suction guide. 56· = 7 The intravenous guide 2 device for measuring blood return according to Item 55 of the patent scope, wherein The surrounding wall of the third tubular member further has a snap ring formed on the inner surface of the large tube: f-end surface, the snap ring can limit the barrier member/, the displacement between the needle body and the click ring A shot, the patent of the patent l ^ 55 can be used to measure the blood return of the intravenous catheter Λ 4 a 'where 'the needle set has a fluoroscopy-drainage hose, ^ Hai drainage hose is placed on the needle The inside of the seat is connected to the first and second puncturing sections of the needle body. - The venous guide set capable of sampling blood return according to Item 5% of the patent application scope, wherein the third sampling member has Surrounding the axis and having a shape, a spoon A opening and a rear opening end, the plug member is hermetically sealed and fastened to the front end of the cavity wall after the closure member is inserted into the lumen 'The closure is airtightly slidable within the lumen and encloses the card: 64 1279237 at the rear end of the lumen wall, the lumen is shaped Low pressure state. 65