CN209286299U - Indwelling needle for hemodialysis that can be clamped and prevents needle stick injury - Google Patents

Abstract

The utility model relates to remaining needle fields, can be pressed from both sides more particularly to one kind close, anti-needle stabs haemodialysis remaining needle, the retaining needle flexible tube and retaining needle flexible tube head integrally connected, the first end of retaining needle flexible tube is connected by connecting tube with jointing pipe, folder, which is provided with, in connecting tube and jointing pipe closes device, jointing pipe and intermediary's junction block are threadedly coupled, and intermediary's junction block is connected with Needlestick prevention device；The beneficial effects of the utility model are: structure is simple, easy to use, effect is good.

Description

Indwelling needle for hemodialysis that can be clamped and prevents needle stick injury

technical field

The utility model relates to the field of indwelling needles, in particular to an indwelling needle for hemodialysis that can be clipped and prevented from being stabbed by needles.

Background technique

Indwelling needles for hemodialysis, or trocars, are used in dialysis. After the puncture, the hard steel needle core can be pulled out, and the soft polymer tubes left in the patient's blood vessels will not cause damage to the blood vessels. It also avoids the lack of blood flow caused by the traditional puncture needle sticking to the blood vessel wall. The movement of the patient's body during the dialysis process will not cause sudden changes in blood flow. You don't have to worry about the needle piercing the blood vessel. It is especially suitable for some restless patients in first aid. .

However, the existing indwelling needles for hemodialysis cannot clamp the indwelling needles well during the operation, and there are no corresponding anti-stab measures to prevent medical staff from being stabbed by the needles due to negligence.

Based on the above prior art, the applicant has made persistent and beneficial exploration and repeated design, and conducted a non-limited number of tests, finally found a solution to the above technical problem and formed the technical solution to be introduced below.

Contents of the invention

In order to solve the problems of the prior art, the utility model provides an indwelling needle for hemodialysis that can be clamped and prevented from being stabbed by a needle. Occurrence of needle-stick injuries to medical staff during use.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a kind of indwelling needle for hemodialysis that can be clamped and prevented from being stabbed by the needle, including the indwelling needle hose, the indwelling needle hose head, the connecting pipe, the connecting joint pipe and the intermediary joint The indwelling needle hose is integrally connected with the indwelling needle hose head, and one end of the indwelling needle hose head is connected to the connecting joint pipe through the connecting pipe, and the connecting pipe and the connecting joint pipe are provided with a clamping device, and the connecting joint pipe and the connecting joint pipe are connected together. The intermediary joint pipe is threadedly connected, and the intermediary joint pipe is connected with the anti-acupuncture device;

The clamping device includes an arc-shaped fixing part, a horizontal edge part, a vertical edge part and a clamping part, the arc-shaped fixing part and the horizontal edge part are fixedly connected, the horizontal edge part and the vertical edge part are fixedly connected, the vertical edge part and the clamping part There is an opening slot on the inner wall of the arc-shaped fixing part. The opening slot is triangular. There is a connecting pipe perforation in the upper middle of the arc-shaped fixing part. The connecting pipe perforation is matched with the connecting pipe. The holding head, the lower clamping head is fixed on the clamping part, the vertical side hole is opened on the vertical side part, the vertical side part hole is matched with the connecting joint pipe, the vertical side part hole thread is set in the vertical side part hole, and the connecting joint The outer middle part of the pipe is integrally fixed with a connecting joint pipe thread fixing ring, and the thread fixing ring is fixed on the periphery of the connecting joint pipe and the upper part is provided with a connecting joint pipe thread, and the connecting joint pipe thread and the vertical edge hole thread are matched.

The end of the indwelling needle hose is provided with an indwelling needle hose hole, the indwelling needle hose head is a tapered structure, the indwelling needle hose head is provided with an indwelling needle hose head cavity, and the connecting joint tube is provided with a connecting joint lumen, The lumen of the connecting joint is a tapered structure.

The intermediary joint pipe is provided with an intermediary joint pipe piercing pipe, the intermediary joint pipe piercing pipe protrudes from the end face of the intermediary joint pipe, and the front part of the intermediary joint pipe is provided with an intermediary joint pipe piercing pipe front chamber, and the intermediary joint pipe piercing pipe front chamber is connected to the joint pipe. Matching setting, the inner wall of the front cavity of the intermediary joint pipe is provided with the thread of the front cavity of the intermediary joint tube, the external thread of the connecting joint tube is arranged outside the connecting joint tube, the thread of the front cavity of the intermediary joint tube is matched with the external thread of the connecting joint tube, The middle part of the intermediary joint pipe is provided with an intermediary joint pipe through-pipe cavity, and an intermediary joint tube rubber head is fixed in the intermediary joint pipe through-pipe cavity. The intermediary joint tube rubber head is a rubber cylindrical structure. It is fixed with the two ends of the middle cavity of the intermediary joint tube, the rear part of the intermediary joint tube is provided with the back cavity of the intermediary joint tube, and the first cavity is fixed between the front cavity of the intermediary joint tube and the middle cavity of the intermediary joint tube. The partition, the second partition is fixedly arranged between the back cavity of the intermediary joint pipe and the middle cavity of the intermediary joint pipe, and the middle part of the first partition and the second partition are provided with partition holes.

The anti-acupuncture device includes a needle sleeve, the needle sleeve is a hollow tube, an outer tube of the needle sleeve is fixed on the front of the needle sleeve, and a protrusion of the outer tube of the needle sleeve is fixed on the outer tube of the needle sleeve. The protrusion of the outer tube of the cannula is rectangular, and the side wall of the cavity after the intermediary joint tube passes through the tube is provided with an embedding groove. The embedding groove is an inverted "L" shape. The diameter of the outer tube is slightly smaller than the diameter of the back cavity of the intermediary joint tube. The needle sleeve groove is provided on the needle sleeve. The needle sleeve groove includes the first needle sleeve groove and the second needle sleeve groove. The first needle sleeve groove Both are rectangular and communicated with the second needle cannula groove, the diameter of the first needle cannula groove is larger than the diameter of the second needle cannula groove, and needle cannula side grooves are opened on both sides of the second needle cannula groove.

The needle sleeve is provided with a needle assembly, the needle assembly includes a needle cover, the needle cover is arc-shaped, the needle cover opening is opened on the lower part of the needle cover, and the needle cover connecting plate is fixed inside the needle cover, and the needle cover connecting plate is a rectangular plate , the needle cover connecting plate passes through the first needle sleeve groove and the width of the needle cover connecting plate is slightly smaller than the diameter of the first needle sleeve groove, the width of the needle cover connecting plate is slightly larger than the diameter of the second needle sleeve groove, the lower part of the needle cover connecting plate and The upper part of the needle fixing rod is fixed, and the middle part of the needle fixing rod is fixed with a needle tube.

A needle cover handle is fixed on the outside of the needle cover.

The anti-acupuncture device includes an anti-stab tube, the front part of the anti-stab tube is provided with an anterior cavity of the anti-stab tube, and the inner wall of the anterior cavity of the anti-stab tube is provided with an embedding groove for the anti-stab tube. The side wall of the cavity after the joint pipe passes through the tube is fixed with a side wall protrusion, the side wall protrusion is rectangular, and the width of the side wall protrusion is consistent with the width of the stab-proof tube insertion groove. The depth of the groove is greater than the height of the needle tube spacer, and the front chamber of the anti-stab tube communicates with the spacer groove through the front needle tube channel.

Described spacer groove is rectangular, and needle tube spacer is arranged in spacer groove, and needle tube spacer comprises left needle tube spacer, right needle tube spacer and spacer moving piece, and spacer mobile piece is correspondingly arranged on At the needle tube channel, the left needle tube spacer and the right needle tube spacer are integrally connected to form a needle tube spacer groove, the spacer moving piece is fixed on the middle side of the right needle tube spacer, and the spacer moving piece is provided with a needle tube insertion slot, The needle tube insertion groove is a circular groove with an opening at the bottom, and a rear needle tube channel is provided at the rear of the spacer groove, the needle tube runs through the needle tube channel, and one end of the needle tube is connected with the push rod.

A method for using an indwelling needle for hemodialysis that can be clamped and prevents needlestick injury, comprising the following steps:

Connect the connection joint pipe and the intermediary joint pipe through threads;

Connect the intermediary joint tube with the anti-needle device;

Push the needle cover connecting plate of the needle cover to move down in the first needle sleeve groove until the needle tube passes through the indwelling needle tube;

Push the needle cover connecting plate of the needle cover to move upward in the first needle sleeve groove until the needle tube exits the intermediary joint tube, continue to push the needle cover connecting plate of the needle cover into the second needle sleeve groove until the tip of the needle tube enters the needle sleeve, When the external force is removed, the needle cover is fixed under the action of the second needle sleeve groove, and the needle tube is fixed in the needle sleeve;

The clamping device is fixed to the connecting joint pipe through threaded connection, the upper clamping head and the lower clamping head of the clamping device are brought close together by external force, and the upper clamping head and the lower clamping head simultaneously press the connecting joint pipe;

Separate the intermediary joint tube from the connecting joint tube, and separate the anti-acupuncture device from the intermediary joint tube;

After connecting the connecting joint pipe with the external pipeline, open the clamping device.

Compared with the prior art, the utility model has the advantages of simple structure, convenient use and good effect, the indwelling needle hose, the indwelling needle hose head, the connecting pipe, the connecting joint pipe and the intermediary joint pipe are tightly combined, and the needle pipe is directly Insert it into the indwelling needle hose, and the connecting tube and the connecting joint tube are provided with a clamping device. On the one hand, the clamping device can avoid the poor closing effect caused by pinching the connecting tube by hand when it is necessary to temporarily block the indwelling needle pipeline. On the other hand, the rotation of the connecting joint pipe driven by the rotating intermediary joint pipe can be avoided by fixing the clamping device. On the one hand, the intermediary joint pipe and the anti-acupuncture device facilitate the replacement and connection of the anti-acupuncture device. It also prevents the needle tube from causing puncture injuries to the nursing staff after being pulled out.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings.

Fig. 1 is a front structural schematic diagram of an embodiment of the present invention.

Fig. 2 is a left view structural diagram of the clamping device in the utility model.

Fig. 3 is a right view structure diagram of the clamping device in the utility model.

Fig. 4 is a schematic diagram of the side view structure of the cavity after the intermediary joint pipe passes through the pipe in Fig. 1 of the present invention.

Fig. 5 is a schematic diagram of the structure of the outer tube of the needle cannula in the utility model.

Fig. 6 is a schematic side view of the structure of the needle assembly in the present invention.

Fig. 7 is a schematic diagram of the top view structure of the needle cover in the utility model.

Fig. 8 is a structural schematic diagram of another embodiment of the present invention.

Fig. 9 is a schematic diagram of the side view structure of the cavity after the intermediary joint pipe passes through the pipe in Fig. 8 .

Fig. 10 is a side view structural diagram of the anti-stab tube anterior chamber of the utility model.

Fig. 11 is a schematic diagram of the installation position of the needle tube spacer in the present invention.

Detailed ways

The utility model is further described in detail through the examples below, and the examples are only used to illustrate the utility model, and do not limit the scope of the utility model.

Embodiment 1: A pinch-proof indwelling needle for hemodialysis as shown in Figure 1-7, including an indwelling needle hose 11, an indwelling needle hose head 12, a connecting tube 13, and a connecting joint tube 14 , the intermediary joint pipe 3, the specific connecting pipe 13 length 20-100mm, the indwelling needle hose 11 is integrally connected with the indwelling needle hose head 12, and one end of the indwelling needle hose head 12 communicates with the connecting joint pipe 14 through the connecting pipe 13, The connecting pipe 13 and the connecting joint pipe 14 are provided with a clamping device 2, the connecting joint pipe 14 is threadedly connected with the intermediary joint pipe 3, the intermediary joint pipe 3 is connected with the anti-acupuncture device 4, and the end of the indwelling needle hose 11 is provided with an indwelling needle. The needle hose hole 111, the specific indwelling needle hose hole 111 is evenly distributed on the end of the indwelling needle hose 11 and surrounds the indwelling needle hose 11 for a week, the indwelling needle hose head 12 is a tapered structure, and the indwelling needle hose head 12 The indwelling needle hose head cavity 121 is arranged inside, and the connecting joint tube 14 is provided with a connecting joint lumen 142, which is a conical structure. The side portion 23 and the clamping portion 24, the arc-shaped fixed portion 21 and the lateral portion 22 are fixedly connected, the lateral portion 22 is fixedly connected to the vertical portion 23, the vertical portion 23 is fixedly connected to the clamping portion 24, and the arc-shaped fixed portion The inner wall of 21 is provided with an opening groove 211, the opening groove 211 is triangular, and the upper middle part of the arc-shaped fixing part 21 is provided with a connecting pipe perforation 212, the connecting pipe perforation 212 is matched with the connecting pipe 13, and the upper clip is fixed on the lateral part 22 The clamping head 221 is fixed with the lower clamping head 241 on the clamping portion 24. Specifically, when the end of the clamping portion 24 is fixed on the opening groove 211, the lower clamping head 241 and the upper clamping head 221 will come into close contact. The connecting pipe 13 is closed, the vertical edge portion 23 is provided with a vertical edge portion hole 231, the vertical edge portion hole 231 is matched with the connecting joint pipe 14, the vertical edge portion hole thread 2311 is arranged in the vertical edge portion hole 231, and the external edge portion hole 231 is connected to the connecting joint pipe 14. The middle part is integrally fixed with a connecting joint pipe thread fixing ring 141, and the thread fixing ring 141 is fixed on a circle around the connecting joint pipe 14 and the upper part is provided with a connecting joint pipe thread 1411. In this embodiment, the setting of the thread fixing ring 141 avoids directly The connecting joint pipe thread 1411 is processed and arranged on the connecting joint pipe 14, which reduces the influence of external force on the connecting joint pipe 14 when the clamping device 2 is rotated and fixed. The connecting joint pipe thread 1411 is matched with the vertical edge hole thread 2311. At the same time, the vertical side hole 231 is detachably fixed on the connecting joint pipe 14 through the thread, and when the connecting joint pipe 14 is clamped, because the outside of the connecting joint pipe 14 is fixed with the end of the clamping device 2, the clamping can be realized stably. When the device 2 clamps the connecting pipe 13, when the intermediary joint pipe 3 is rotated, the rear end of the clamping device 2 can be pinched and fixed, so that when the intermediary joint pipe 3 rotates, the connecting joint pipe 14 and the clamping device 2 are relatively firm Fixed, avoiding the connecting joint pipe 14 rotating in the clamping device 2 or driving the clamping device 2 to rotate when the intermediary joint pipe 3 is rotated, the intermediary joint pipe 3 An intermediary joint pipe piercing pipe 31 is provided, and the intermediary joint pipe piercing pipe 31 protrudes from the end surface of the intermediary joint pipe 3. The inner front part of the intermediary joint pipe 3 is provided with an intermediary joint pipe piercing front cavity 32, and the intermediary joint pipe piercing front chamber 32 is connected to the The joint pipe 14 is matched and arranged, and the inner wall of the intermediary joint pipe piercing front cavity 32 is provided with an intermediary joint pipe piercing front chamber thread 321, and the connecting joint pipe 14 is provided with a connecting joint pipe external thread 143, and the intermediary joint pipe piercing pipe front chamber thread 321 is connected with The external thread 143 of the connecting joint pipe is matched and set, and the middle part of the intermediary joint pipe 3 is provided with an intermediary joint pipe piercing cavity 33, and an intermediary joint pipe rubber head 331 is fixed inside the intermediary joint pipe piercing cavity 33, and the intermediary joint pipe rubber head 331 It is a cylindrical structure of rubber material. The two ends of the rubber head 331 of the intermediary joint pipe are fixed to the two ends of the middle cavity 33 of the intermediary joint pipe. A first partition 35 is fixed between the front cavity 32 of the joint tube and the middle cavity 33 of the intermediate joint tube, and a second partition is fixed between the rear cavity 34 of the intermediate joint tube and the middle cavity 33 of the intermediate joint tube. The plate 36 , the middle part of the first partition 35 and the second partition 36 are all provided with a partition hole 351 .

The anti-acupuncture device 4 includes a needle sleeve 41, the needle sleeve 41 is a hollow tube, the front portion of the needle sleeve 41 is fixed with a needle sleeve outer tube 411, and the needle sleeve outer tube 411 is fixedly provided with a needle sleeve outer tube The protrusion 4111, the protrusion 4111 of the outer tube of the needle cannula is rectangular, the side wall of the cavity 34 after the intermediary joint tube passes through the tube is provided with an embedding groove 341, the embedding groove 341 is in an inverted "L" shape, and the outer tube of the needle cannula protrudes 4111 The width is consistent with the width of the embedding groove 341, the diameter of the outer tube 411 of the needle sleeve is slightly smaller than the diameter of the rear cavity 34 of the intermediary joint pipe, and the needle sleeve 41 is provided with a needle sleeve groove 400, which includes the first needle sleeve The tube groove 401 and the second needle sleeve groove 402, the first needle sleeve groove 401 and the second needle sleeve groove 402 are rectangular and connected, and the diameter of the first needle sleeve groove 401 is larger than that of the second needle sleeve groove The diameter is 402, the second needle sleeve groove 402 is provided with needle sleeve side grooves 403, the needle sleeve 41 is provided with a needle assembly 412, the needle sleeve 41 is made of PP or PE plastic material, and the needle assembly 412 includes a needle sleeve 4121 , the needle cover 4121 is arc-shaped, the lower part of the needle cover 4121 is provided with a needle cover opening 41211, the inside of the needle cover 4121 is fixed with a needle cover connecting plate 4122, the needle cover connecting plate 4122 is a rectangular plate, and the needle cover connecting plate 4122 passes through the first The needle sleeve groove 401 and the width of the needle sleeve connecting plate 4122 are slightly smaller than the diameter of the first needle sleeve groove 401, the width of the needle sleeve connecting plate 4122 is slightly larger than the diameter of the second needle sleeve groove 402, the lower part of the needle sleeve connecting plate 4122 is connected with the needle fixing rod The upper part of 4123 is fixed, and the needle tube 4124 is fixed in the middle of the needle head fixing rod 4123. Specifically, the needle tube 4124 enters the lower end of the indwelling needle hose 11 when the needle cover 4121 moves downward to the lower part of the needle cover 41. When in use, the needle cover connecting plate 4122 is in the The first needle sleeve groove 401 is free to move, when the needle cover connecting plate 4122 moves upwards into the second needle sleeve groove 402 under the action of external force, the needle cover connecting plate 4122 is under the action of the second needle sleeve groove 402 itself Being clamped and fixed, a needle cover handle 41212 is fixed on the outside of the needle cover 4121 , and the needle cover handle 41212 is used to move the needle cover 4121 .

The method for using the indwelling needle for hemodialysis that can be clamped and prevented from needle sticking includes the following steps: connecting the connecting joint tube 14 and the intermediary joint tube 3 through threads; connecting the intermediary joint tube 3 with the anti-acupuncture device 4; The needle cover connecting plate 4122 of the needle cover 4121 moves downward in the first needle sleeve groove 401 until the needle tube 4124 passes through the indwelling needle hose 11; Move upward until the needle tube 4124 exits the intermediary joint tube 3, continue to push the needle cover connecting plate 4122 of the needle cover 4121 into the second needle sleeve groove 402 until the needle tip of the needle tube 4124 enters the needle sleeve 41, and remove the external force on the second needle sleeve Under the action of the groove 402, the needle cover 4121 is fixed, and the needle tube 4124 is fixed in the needle sleeve 41; the clamping device 2 is fixed to the connecting joint tube 14 through threaded connection, and the upper clamping head of the clamping device 2 is fixed by external force. 221 and the lower clamping head 241 approach each other, and the upper clamping head 221 and the lower clamping head 241 press the connecting joint pipe 14 at the same time; The tube 3 is separated; after the connecting joint tube 14 is connected with the external pipeline, the clamping device 2 is opened.

Embodiment 2: A pinch-proof indwelling needle for hemodialysis as shown in Figures 8-11, including an indwelling needle hose 11, an indwelling needle hose head 12, a connecting tube 13, and a connecting joint tube 14 , the intermediary joint pipe 3, the specific connecting pipe 13 length 20-100mm, the indwelling needle hose 11 is integrally connected with the indwelling needle hose head 12, and one end of the indwelling needle hose head 12 communicates with the connecting joint pipe 14 through the connecting pipe 13, The connecting pipe 13 and the connecting joint pipe 14 are provided with a clamping device 2, the connecting joint pipe 14 is threadedly connected with the intermediary joint pipe 3, the intermediary joint pipe 3 is connected with the anti-acupuncture device 4, and the end of the indwelling needle hose 11 is provided with an indwelling needle. The needle hose hole 111, the specific indwelling needle hose hole 111 is evenly distributed on the end of the indwelling needle hose 11 and surrounds the indwelling needle hose 11 for a week, the indwelling needle hose head 12 is a tapered structure, and the indwelling needle hose head 12 The indwelling needle hose head cavity 121 is arranged inside, and the connecting joint tube 14 is provided with a connecting joint lumen 142, which is a conical structure. The side portion 23 and the clamping portion 24, the arc-shaped fixed portion 21 and the lateral portion 22 are fixedly connected, the lateral portion 22 is fixedly connected to the vertical portion 23, the vertical portion 23 is fixedly connected to the clamping portion 24, and the arc-shaped fixed portion The inner wall of 21 is provided with an opening groove 211, the opening groove 211 is triangular, and the upper middle part of the arc-shaped fixing part 21 is provided with a connecting pipe perforation 212, the connecting pipe perforation 212 is matched with the connecting pipe 13, and the upper clip is fixed on the lateral part 22 The clamping head 221 is fixed with the lower clamping head 241 on the clamping portion 24. Specifically, when the end of the clamping portion 24 is fixed on the opening groove 211, the lower clamping head 241 and the upper clamping head 221 will come into close contact. The connecting pipe 13 is closed, the vertical edge portion 23 is provided with a vertical edge portion hole 231, the vertical edge portion hole 231 is matched with the connecting joint pipe 14, the vertical edge portion hole thread 2311 is arranged in the vertical edge portion hole 231, and the external edge portion hole 231 is connected to the connecting joint pipe 14. The middle part is integrally fixed with a connecting joint pipe thread fixing ring 141, and the thread fixing ring 141 is fixed on a circle around the connecting joint pipe 14 and the upper part is provided with a connecting joint pipe thread 1411. In this embodiment, the setting of the thread fixing ring 141 avoids directly The connecting joint pipe thread 1411 is processed and arranged on the connecting joint pipe 14, which reduces the influence of external force on the connecting joint pipe 14 when the clamping device 2 is rotated and fixed. The connecting joint pipe thread 1411 is matched with the vertical edge hole thread 2311. At the same time, the vertical side hole 231 is detachably fixed on the connecting joint pipe 14 through the thread, and when the connecting joint pipe 14 is clamped, because the outside of the connecting joint pipe 14 is fixed with the end of the clamping device 2, the clamping can be realized stably. When the device 2 clamps the connecting pipe 13, when the intermediary joint pipe 3 is rotated, the rear end of the clamping device 2 can be pinched and fixed, so that when the intermediary joint pipe 3 rotates, the connecting joint pipe 14 and the clamping device 2 are relatively firm Fixed, avoiding the connecting joint pipe 14 rotating in the clamping device 2 or driving the clamping device 2 to rotate when the intermediary joint pipe 3 is rotated, the intermediary joint pipe 3 An intermediary joint pipe piercing pipe 31 is arranged inside, and the intermediary joint pipe piercing pipe 31 protrudes from the end face of the intermediary joint pipe 3. The inner front part of the intermediary joint pipe 3 is provided with an intermediary joint pipe piercing front chamber 32, and the intermediary joint pipe piercing pipe front chamber 32 is in contact with the The connecting joint pipe 14 is matched and set, the inner wall of the intermediary joint pipe piercing front cavity 32 is provided with the intermediary joint pipe piercing front cavity thread 321, the connecting joint pipe 14 is provided with the external thread 143 of the connecting joint pipe, and the intermediary joint pipe piercing front cavity thread 321 Matching with the outer thread 143 of the connecting joint pipe, the middle part of the intermediate joint pipe 3 is provided with an intermediate joint pipe piercing cavity 33, and the intermediary joint pipe rubber head 331 is fixed inside the intermediary joint pipe piercing cavity 33, and the intermediary joint pipe rubber head 331 is a cylindrical structure of rubber material, the two ends of the intermediate joint pipe rubber head 331 are fixed to the two ends of the intermediate joint pipe through-pipe middle chamber 33, and the inner rear part of the intermediate joint pipe 3 is provided with an intermediary joint pipe through-pipe rear chamber 34, A first partition 35 is fixed between the front cavity 32 of the intermediary joint tube and the middle cavity 33 of the intermediary joint tube, and a second partition is fixed between the back cavity 34 of the intermediary joint tube and the middle cavity 33 of the intermediary joint tube. The partition 36 , the first partition 35 and the middle of the second partition 36 are all provided with a partition hole 351 . Anti-acupuncture device 4 comprises anti-stab tube 42, anti-stab tube 42 front portion is provided with anti-stab tube front chamber 421, and anti-stab tube front cavity 421 inner wall is provided with anti-stab tube embedding groove 4211, and stab-proof pipe embedding groove 4211 is " L” shape, the side wall of the cavity 34 after the intermediary joint pipe passes through the tube is fixed with a side wall protrusion 361, the side wall protrusion 361 is rectangular, the width of the side wall protrusion 361 is consistent with the width of the anti-stab tube insertion groove 4211, and the anti-stab tube 42 is provided with a spacer groove 422, the depth of the spacer groove 422 is greater than the height of the needle tube spacer sheet 4221, the anti-stab tube front chamber 421 is connected with the spacer groove 422 through the front needle tube channel 4231, and the spacer groove 422 is Rectangular, the needle tube spacer 4221 is arranged in the spacer groove 422, the needle tube spacer 4221 includes the left needle tube spacer 42211, the right needle tube spacer 42212 and the spacer moving piece 42214, the needle tube spacer 4221 is an iron sheet Material, the spacer moving piece 42214 is correspondingly arranged at the needle tube channel 423, the spacer moving piece 42214 plays the role of blocking the needle tube channel 423, the left needle tube spacer 42211 and the right needle tube spacer 42212 are integrally connected to form a needle tube spacer The slot 42213, the shifting piece 42214 is fixed on the middle side of the right needle tube shifting piece 42212, the shifting piece 42214 is provided with a needle tube insertion groove 42215, the needle tube insertion groove 42215 is a circular groove with an opening at the bottom, and the shifting groove 422 A rear needle tube channel 4232 is opened at the rear, a needle tube 4124 runs through the needle tube channel 423 , and one end of the needle tube 4124 is connected with a push rod 4125 . When in use, the needle tube 4124 passes through the needle tube channel 423 at the rear of the anti-stab tube 42, the needle tube 4124 enters the spacer groove 422 and passes through the needle tube insertion groove 42215 into the needle tube channel 423 at the front of the stab-proof tube 42 and enters the intermediary joint tube 3 in turn Enter the connecting joint tube 14, the connecting tube 13, the indwelling needle hose head 12 and the indwelling needle hose 11, and pull out the needle tube 4124 after use. Under the action of the internal stress of the spacer 4221 itself, the distance between the left needle spacer 42211 and the right needle spacer 42212 increases, and other parts of the spacer 42214 block the front needle tube channel 4231 at the front of the anti-stab tube 42. To prevent the needle tube 4124 from being accidentally inserted from the needle tube channel 423 under the action of an external force to cause a stab wound.

In the description of this specification, descriptions with reference to terms such as "one embodiment", "shown", or "some examples" mean that specific features, structures, materials or characteristics described in conjunction with the embodiment or examples are included in the present application. Novel at least one embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model in other forms. Any skilled person who is familiar with this profession may use the technical content disclosed above to change or remodel it into an equivalent change. Equivalent embodiment. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims (8)

1. one kind can press from both sides close, anti-needle stabs haemodialysis remaining needle, it is characterised in that: including retaining needle flexible tube (11), indwelling Needle hose head (12), connecting tube (13), jointing pipe (14) and intermediary's junction block (3), the retaining needle flexible tube (11) with stay Needle hose head (12) integrally connected is set, retaining needle flexible tube head (12) one end is connected by connecting tube (13) with jointing pipe (14) It is logical, folder, which is provided with, in connecting tube (13) and jointing pipe (14) closes device (2), jointing pipe (14) and intermediary's junction block (3) it is threadedly coupled, intermediary's junction block (3) and Needlestick prevention device (4) connection；

It includes arc fixed part (21), cross edge (22), vertical edge portion (23) and clamping part (24), arc that the folder, which closes device (2), Fixed part (21) is fixedly connected with cross edge (22), and cross edge (22) is fixedly connected with vertical edge portion (23), vertical edge portion (23) and folder It holds portion (24) to be fixedly connected, be offered open slot (211) on arc fixed part (21) inner sidewall, open slot (211) is triangle, Middle part offers connecting tube perforation (212) on arc fixed part (21), and connecting tube perforation (212) and connecting tube (13) matching are set It sets, is fixed in cross edge (22) clamping head (221), is fixed on clamping part (24) lower clamping head (241), vertical edge portion (23) On offer vertical edge portion hole (231), vertical edge portion hole (231) matches setting with jointing pipe (14), sets in vertical edge portion hole (231) Vertical edge portion hole screw thread (2311) is set, jointing pipe (14) outer integral middle is fixed with jointing pipe screw thread retainer plate (141), The circle (141) that is screwed, which is fixed on outside jointing pipe (14), to make a circle and top offers jointing pipe screw thread (1411), Jointing pipe screw thread (1411) and vertical edge portion hole screw thread (2311) matching setting.

2. it is according to claim 1 press from both sides close, anti-needle stabs haemodialysis remaining needle, it is characterised in that: the indwelling Needle hose (11) end offers retaining needle flexible tube hole (111), and retaining needle flexible tube head (12) is pyramidal structure, retaining needle flexible tube head (12) retaining needle flexible tube head cavity (121) are set in, are provided with jointing lumen (142) in jointing pipe (14), connection connects Head tube chamber (142) is pyramidal structure.

3. it is according to claim 1 or 2 press from both sides close, anti-needle stabs haemodialysis remaining needle, it is characterised in that: in described It interfaces with and is provided with intermediary's junction block poling (31) in head tube (3), intermediary's junction block poling (31) prominent intermediary's junction block (3) end Face, intermediary's junction block (3) interior front be equipped with intermediary's junction block poling ante-chamber (32), intermediary's junction block poling ante-chamber (32) with connect Junction block (14) matching setting, intermediary junction block poling ante-chamber (32) inner wall offer intermediary's junction block poling ante-chamber screw thread (321), jointing pipe (14) is arranged jointing pipe external screw thread (143) outside, intermediary's junction block poling ante-chamber screw thread (321) with Jointing pipe external screw thread (143) matching setting, the interior middle part of intermediary's junction block (3) are equipped with intermediary's junction block poling lumen (33), Intermediary's junction block Rubber end (331) is fixed in intermediary's junction block poling lumen (33), intermediary's junction block Rubber end (331) is rubber Glue material matter cylindrical-shaped structure, the both ends of intermediary's junction block Rubber end (331) and the both ends phase of intermediary's junction block poling lumen (33) Fixed, intermediary's junction block (3) interior rear portion is equipped with intermediary's junction block poling back cavity (34), intermediary's junction block poling ante-chamber (32) and in It interfaces with and is fixed between head tube poling lumen (33) first partition (35), intermediary's junction block poling back cavity (34) and intermediary's junction block Between poling lumen (33) be fixedly installed second partition (36), first partition (35) and second partition (36) middle part offer every Plate hole (351).

4. it is according to claim 3 press from both sides close, anti-needle stabs haemodialysis remaining needle, it is characterised in that: the anti-needle Thorn device (4) includes needle cannula (41), and needle cannula (41) is hollow tube, and needle cannula (41) front is fixed with needle cannula outer tube (411), it is raised (4111) that needle cannula outer tube is fixedly installed on needle cannula outer tube (411), needle cannula outer tube raised (4111) is Rectangular-shaped, intermediary junction block poling back cavity (34) side wall offers embedded groove (341), and embedded groove (341) is inverted " L " shape, needle guard Raised (4111) width of pipe outer tube and embedded groove (341) equivalent width, needle cannula outer tube (411) diameter are slightly less than intermediary's junction block Poling back cavity (34) diameter offers needle guard tube seat (400) in needle cannula (41), and needle guard tube seat (400) includes the first needle cannula Slot (401) and the second needle guard tube seat (402), the first needle guard tube seat (401) and the second needle guard tube seat (402) are rectangular-shaped and phase Connection, the first needle guard tube seat (401) diameter are greater than second needle guard tube seat (402) diameter, and second needle guard tube seat (402) two sides open up There are needle cannula side channel (403).

5. it is according to claim 4 press from both sides close, anti-needle stabs haemodialysis remaining needle, it is characterised in that: the needle guard It is provided with needle assembly (412) outside pipe (41), needle assembly (412) includes pinhead sleeve (4121), and pinhead sleeve (4121) is circular arc Shape, pinhead sleeve (4121) lower part offer syringe needle running-on (41211), are fixed with pinhead sleeve connecting plate inside pinhead sleeve (4121) (4122), pinhead sleeve connecting plate (4122) is rectangular slab, and pinhead sleeve connecting plate (4122) passes through the first needle guard tube seat (401) and needle Headgear connecting plate (4122) width is slightly less than first needle guard tube seat (401) diameter, and pinhead sleeve connecting plate (4122) width is slightly larger than Second needle guard tube seat (402) diameter, pinhead sleeve connecting plate (4122) lower part are fixed with syringe needle fixed link (4123) top, and syringe needle is solid Needle tubing (4124) are fixed in the middle part of fixed pole (4123).

6. it is according to claim 5 press from both sides close, anti-needle stabs haemodialysis remaining needle, it is characterised in that: the syringe needle Pinhead sleeve lever (41212) are fixed on the outside of set (4121).

7. it is according to claim 3 press from both sides close, anti-needle stabs haemodialysis remaining needle, it is characterised in that: the anti-needle Thorn device (4) includes anti-stab pipe (42), and anti-stab pipe (42) front is provided with anti-stab pipe ante-chamber (421), and anti-stab pipe ante-chamber (421) is interior Wall offers anti-stab pipe embedded groove (4211), and anti-stab pipe embedded groove (4211) is L-shaped, intermediary junction block poling back cavity (34) side Wall is fixed with projected side wall (361), and projected side wall (361) is rectangular-shaped, projected side wall (361) width and anti-stab pipe embedded groove (4211) equivalent width, anti-stab pipe (42) is interior to be provided with baffle groove (422), and baffle groove (422) depth is greater than needle tubing baffle Piece (4221) height, anti-stab pipe ante-chamber (421) are connected with baffle groove (422) by preceding needle channel (4231).

8. it is according to claim 7 press from both sides close, anti-needle stabs haemodialysis remaining needle, it is characterised in that: the baffle Groove (422) is rectangle, and needle tubing baffle piece (4221) is provided in baffle groove (422), and needle tubing baffle piece (4221) includes a left side Needle tubing baffle piece (42211), right needle tubing baffle piece (42212) and baffle moving sheet (42214), baffle moving sheet (42214) are right It should be set at needle channel (423), left needle tubing baffle piece (42211) and right needle tubing baffle piece (42212) integrally connected and shape At needle tubing baffle film trap (42213), baffle moving sheet (42214) is fixed on side in the middle part of right needle tubing baffle piece (42212), baffle Offered on moving sheet (42214) needle tubing insertion groove (42215), needle tubing insertion groove (42215) be circular trough and bottom opening, every Shelves groove (422) rear portion offers rear needle channel (4232), and needle tubing (4124) runs through needle channel (423), needle tubing (4124) One end and push rod (4125).