CN217138849U - Remaining needle - Google Patents
Remaining needle Download PDFInfo
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- CN217138849U CN217138849U CN202122610136.2U CN202122610136U CN217138849U CN 217138849 U CN217138849 U CN 217138849U CN 202122610136 U CN202122610136 U CN 202122610136U CN 217138849 U CN217138849 U CN 217138849U
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- needle
- catheter
- indwelling
- seat
- tube
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Abstract
The utility model relates to the technical field of medical equipment, in particular to an indwelling needle. The indwelling needle comprises an indwelling catheter component and an puncture needle component; the indwelling catheter component comprises a catheter seat and a catheter, wherein the catheter is arranged on the catheter seat, and a first clamping slot hole is formed in the catheter seat; the puncture needle assembly comprises a needle seat, a needle tube and a puncture-proof device, and the catheter seat is sleeved in the needle seat; the anti-needling device comprises an elastic part, the elastic part is movably arranged in the first clamping groove hole, one end of the needle tube is fixed in the needle seat, and the other end of the needle tube sequentially penetrates through the anti-needling device and the catheter and extends out of the catheter; the needle tube comprises a blocking part and a needle tip part, and when the needle tube is inserted, the elastic part is clamped in the first clamping groove hole; when the needle tube is withdrawn, the blocking part returns and is blocked on the inner part of the tail end of the acupuncture prevention device, the needle tip part returns to the inside of the acupuncture prevention device, and the elastic part is separated from the first clamping groove hole. The application keeps somewhere the needle through preventing the needle point portion lock in the needle-punching device to avoid patient or doctorsed and nurses and is stabbed by the needle tubing.
Description
Technical Field
The utility model relates to the technical field of medical equipment, a keep somewhere needle particularly.
Background
The venous indwelling needle can reduce the pain of a patient caused by repeated venipuncture and the fear of injection, relieve the anxiety of family members, facilitate clinical medication, help emergency medication of critical patients, relieve the workload of nurses and reduce the pain of the patient, so the venous indwelling needle is widely applied clinically.
The existing indwelling needle is composed of a catheter seat and a needle seat, the needle head penetrates through the catheter seat and the needle seat for use, the needle head is reversely pulled out of the catheter seat and the needle seat after use, but if the structure is not careful, the needle head is very easy to prick a patient or perform medical care after being pulled out, and the indwelling needle is very dangerous.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a keep somewhere needle for keep somewhere the needle and reach the purpose that prevents the personnel that the needle prick injures after extracting.
To achieve the purpose, the utility model adopts the following technical proposal:
an indwelling needle comprising an indwelling catheter assembly and an introducer needle assembly;
the indwelling catheter component comprises a catheter seat and a catheter, wherein the catheter is arranged on the catheter seat, and a first clamping slot hole is formed in the catheter seat;
the puncture needle assembly comprises a needle seat, a needle tube, a puncture-preventing device and an anti-falling baffle, and the catheter seat is sleeved in the needle seat;
the needle-prick preventing device comprises an elastic part, the elastic part is movably arranged in the first clamping groove hole, one end of the needle tube is fixed in the needle seat, the other end of the needle tube sequentially penetrates through the needle-prick preventing device and the guide tube and extends out of the guide tube, the anti-falling baffle is wrapped on the periphery of the needle-prick preventing device, and the anti-falling baffle is used for preventing the needle tube from sliding out of the side face of the needle-prick preventing device when the needle tube is withdrawn;
the needle tube comprises a blocking part and a needle tip part, and when the needle tube is fed, the elastic part is clamped in the first clamping groove hole;
when the needle tube is withdrawn, the blocking part is withdrawn and blocked on the inner part of the tail end of the acupuncture prevention device, the needle tip part is withdrawn into the acupuncture prevention device, the elastic part is separated from the first clamping groove hole, and the acupuncture prevention device is withdrawn from the catheter seat along with the needle tube.
Preferably, the anti-acupuncture device further comprises a hook blocking part, a needle penetrating hole is formed in the bottom of the anti-acupuncture device, and the other end of the needle tube sequentially penetrates through the needle penetrating hole and the hook blocking part.
Preferably, the size of the blocking portion is larger than the diameter of the needle penetrating hole.
Preferably, the hook blocking part comprises two hook blocking sheets, and the other end of the needle tube penetrates through a gap between the two hook blocking sheets;
and after the needle tip part is retracted into the acupuncture prevention device, the two hook blocking pieces are folded.
Preferably, the catheter hub is provided with a first channel, a second channel and a third channel;
the indwelling catheter assembly further comprises an isolation plug mounted in the first channel, the catheter is disposed in the second channel, and the third channel is used for connection with an external extension tube.
Preferably, the conduit is riveted to the lumen of the second channel by a rivet.
Preferably, the needle seat comprises a handle, and the handle comprises a needle holding surface provided with a plurality of anti-slip strips.
Preferably, a pressure-resistant buckling part is arranged in the catheter seat, and comprises a main body, a buckle is arranged on the main body, and a through hole is formed in the main body and used for the needle tube to pass through;
the catheter seat is provided with a second clamping groove hole, and the buckle is clamped in the second clamping groove hole.
Preferably, the head end of the catheter base is provided with a sheath anti-drop ring, the sheath anti-drop ring comprises a plurality of layers of anti-drop rings, and the sheath anti-drop ring is used for installing an external sheath.
Preferably, the puncture needle assembly further comprises a retaining baffle, the retaining baffle wraps the periphery of the needle puncture preventing device, and the retaining baffle is used for preventing the needle tube from sliding out of the side face of the needle puncture preventing device when the needle tube is withdrawn.
Compared with the prior art, the embodiment of the utility model provides a following beneficial effect has:
the catheter seat is sleeved in the needle seat, the other end of the needle tube sequentially penetrates through the anti-acupuncture unit and the catheter and extends out of the catheter, and the elastic piece is movably arranged in the first clamping groove hole. When the needle is inserted, the elastic piece is clamped in the first clamping groove hole, and the worker pushes the puncture needle assembly in place.
When withdrawing the needle, the worker withdraws the needle holder by holding the needle holder in the hand in the direction away from the indwelling catheter assembly, the flat opening part is blocked at the bottom of the acupuncture prevention unit, the flat opening part and the needle tip part both withdraw into the acupuncture prevention unit, and along with the continuous withdrawal of the needle tube, the elastic part is separated from the first clamping groove hole under the action of external force, so that the acupuncture prevention unit is separated from the catheter holder, and the puncture needle assembly is separated from the indwelling catheter assembly. The utility model provides an it is through preventing the needle point portion lock in the needle stick unit to avoid patient or medical the needle tubing stabbing of doctorsing and nurses.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a sectional view of an indwelling needle assembly according to the present invention in which an introducer needle assembly and an indwelling catheter assembly are assembled;
FIG. 2 is a perspective view of the needle holder of the indwelling needle structure of the present invention;
FIG. 3 is a sectional view of the needle holder of the indwelling needle structure of the present invention;
FIG. 4 is a diagram showing the position of the catheter holder and the needle holder when the indwelling needle of the present invention is held with both hands;
FIG. 5 is a diagram showing the position of the catheter holder and the needle holder when the indwelling needle structure of the present invention is used in a one-hand held acupuncture method;
FIG. 6 is a schematic structural view of the anti-needle-stick device of the indwelling needle assembly according to the present invention;
FIG. 7 is an assembled state view of the lancet assembly of the present invention;
fig. 8 is a perspective view of the catheter hub of the present invention;
fig. 9 is a perspective view of the pressure-resistant fastening portion of the present invention;
FIG. 10 is a view of the needle assembly of the present invention shown withdrawn from the indwelling catheter assembly;
fig. 11 is a cross-sectional view of the needle assembly of the present invention after withdrawal of the needle from the indwelling catheter assembly.
Illustration of the drawings: an indwelling catheter assembly 1, a puncture needle assembly 2;
a catheter seat 11, a catheter 12, a rivet 13, an isolating plug 14 and a pressure-resistant buckling part 15;
a needle seat 21, a needle tube 22, an anti-needling device 23 and an anti-falling baffle 24;
a first channel 111, a second channel 112, a third channel 113, a first clamping slot hole 114, a second clamping slot hole 115, a mounting guide rail 116 and a sheath anti-falling ring 117;
a buckle 151, a main body 152;
a blocking part 221, a needle tip part 222, an elastic member 231, a hook part 232 and a needle passing hole 233.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are clearly and completely described with reference to the drawings in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.
Furthermore, the terms "long", "short", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the device or element referred to must have the specific orientation, operate in the specific orientation configuration, and thus, should not be construed as limiting the present invention.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
Referring to fig. 1 to 11, an indwelling needle includes an indwelling catheter assembly 1 and an introducer needle assembly 2;
the indwelling catheter assembly 1 comprises a catheter seat 11 and a catheter 12, wherein the catheter 12 is arranged on the catheter seat 11, and a first clamping slot hole 114 is formed in the catheter seat 11;
the puncture needle assembly 2 comprises a needle seat 21, a needle tube 22 and an anti-needle-prick device 23, wherein the catheter seat 11 is sleeved in the needle seat 21;
the acupuncture-preventing device 23 comprises an elastic element 231, the elastic element 231 is movably arranged in the first clamping groove hole 114, one end of the needle tube 22 is fixed in the needle seat 21, and the other end of the needle tube 22 sequentially penetrates through the acupuncture-preventing device 23 and the catheter 12 and extends out of the catheter 12;
when the needle tube 22 is withdrawn, the blocking portion 221 is blocked on the inner portion of the rear end of the needle-prick preventing device 23, the needle tip 222 is withdrawn into the needle-prick preventing device 23, the needle tip 222 is close to the head end of the needle-prick preventing device 23, the elastic element 231 is disengaged from the first notch hole 114, and the needle-prick preventing device 23 is withdrawn from the catheter holder 11 together with the needle tube 22.
The indwelling needle works according to the following principle:
the catheter hub 11 is sleeved in the needle hub 21, the other end of the needle tube 22 sequentially passes through the acupuncture-proof device 23 and the catheter 12 and extends out of the catheter 12, and the elastic element 231 is movably arranged in the first clamping groove hole 114. In the normal state and the insertion state of the indwelling needle, the elastic member 231 is locked in the first notch hole 114, and the worker pushes the puncture needle assembly 2 in place during the insertion.
When withdrawing the needle, the worker withdraws the needle holder 21 in the direction away from the indwelling catheter assembly 1 by holding the needle holder, the blocking part 221 is blocked at the bottom of the needle puncture preventing device 23, the blocking part 221 and the needle tip 222 both withdraw into the needle puncture preventing device 23, and along with the continued withdrawal of the needle tube 22, the elastic member 231 is disengaged from the first notch hole 114 under the action of external force, and the needle puncture preventing device 23 is separated from the catheter holder 11, so that the puncture needle assembly 2 is separated from the indwelling catheter assembly 1. The indwelling needle of the present embodiment prevents the patient or medical care from being pricked by the needle tube 22 by locking the needle tip portion 222 in the needle-prick preventing means 23.
Further, the anti-needle-stick device 23 includes two elastic members 231, and the catheter seat 11 has a first slot 114 formed therein at a position corresponding to the two elastic members 231. The elastic member 231 of the present application is made of an elastic material such as rubber or spring steel.
In an alternative embodiment, the needle-prick preventing device 23 further includes a hook stopping portion 232, a needle penetrating hole 233 is formed at the bottom of the needle-prick preventing device 23, the hook stopping portion 232 is disposed at the front end of the needle-prick preventing device 23, and the other end of the needle tube 22 sequentially penetrates through the needle penetrating hole 233 and the hook stopping portion 232. When the needle tube 22 is withdrawn, the stopper 221 and the needle tip 222 of the needle tube 22 are withdrawn into the needlestick prevention device 23 through the hook stopper 232.
The catch portion 232 in this application is selected from an elastic material. The size of the blocking portion 221 is larger than the diameter of the needle penetrating hole 233, and the blocking portion 221 is blocked at the position of the needle penetrating hole 233.
In an alternative embodiment, catch 232 comprises two catch tabs, the other end of needle cannula 22 passing through the gap between the two catch tabs;
after the needle tip portion 222 is retracted into the needle prick prevention device 23, the two hook retaining pieces are closed.
In an alternative embodiment, the needle assembly 2 further comprises a retaining plate 24, the retaining plate 24 is wrapped around the periphery of the needle puncture preventing device 23, and when the needle tube 22 is withdrawn, the retaining plate 24 can be folded to further prevent the needle tube 22 from slipping out of the side of the needle puncture preventing device 23. In an alternative embodiment, catheter hub 11 is provided with a first channel 111, a second channel 112, and a third channel 113;
In order to avoid operating personnel to cause when keeping somewhere the needle because of skidding and prick inaccurate or withdraw the needle for a long time, furtherly, needle file 21 includes handle 211, and the terminal surface design of handle 211 is formed into concave surface shape and holds needle position 212 for the concave surface, and in the operation of singlehanded needle of holding, operating personnel's finger butt is held needle position 212 at the concave surface, and the difficult slippage of finger goes out, the accurate needle of the operating personnel of being more convenient for. Optionally, the concave needle holding portion 212 is provided with a plurality of cleats 213.
Optionally, the handle 211 comprises a plurality of sides, wherein one side is provided with anti-slip bumps 214, and the other side is provided with anti-slip flanges 215. Optionally, the catheter hub 11 is also provided with anti-slip bumps. Optionally, hub 21 further includes barrel 216.
Specifically, referring to fig. 4 in detail, when the operator uses two hands to perform needle-holding puncture and needle withdrawal, the operator holds the handle 211, and at this time, the anti-slip bumps 214 and the anti-slip flanges 215 designed on the upper and lower surfaces of the handle 211 play an anti-slip role, so as to reduce the occurrence of accidents.
When the operator uses the one-hand needle-holding method, see fig. 5 in detail, the third channel 113 is rotated to one side of the handle 211, and when the needle tube 22 punctures, the method one: the puncture part of the patient is tightened by one hand, and the puncture is performed by simultaneously pinching the lower surface of the handle 211 and the outer surface of the third channel 113 by the other hand, at the moment, the anti-slip convex points 214, the anti-slip flange 215 and the convex points on the catheter holder 11 on the lower surface of the handle 211 play an anti-slip role. The second method comprises the following steps: one hand tightens up the patient puncture position, and the concave surface is held the needle position 212 to a finger, and the thumb supports needle seat bottom and punctures, and the concave surface is held the needle position 212 and is held the finger this moment, and antislip strip 213 prevents to skid, can effectual antiskid take off. When the needle tube 22 is withdrawn, the operator holds the puncture part of the patient with one hand, pushes the thumb of the other hand forward against the third channel 113 of the catheter holder 11, the index finger buckles the needle holding surface to withdraw the needle, and the index finger is clamped in the concave needle holding part 212 and is provided with the anti-slip strip 213, so that the double anti-slip effect is achieved.
The ordinary indwelling needle can not be used under the high pressure condition, the testing pressure is 300KPA, and the high pressure resistant indwelling needle testing pressure is 300PSI, mainly lie in that the isolating plug 14 is not high pressure resistant, the isolating plug 14 is easy to be washed out of the catheter seat 11, the isolating plug 14 at present is fixed by interference fit and adhesive, and can not reach high pressure resistant usually. In order to solve the above problem, in an alternative embodiment, a pressure-resistant fastening portion 15 is disposed in the catheter holder 11, the pressure-resistant fastening portion 15 includes a main body 152, a fastening 151 is disposed on the main body 152, and the main body 152 is provided with a through hole for the needle tube 22 to pass through;
the catheter base 11 is provided with a second slot 115, and the buckle 151 is engaged in the second slot 115 for mechanical locking.
The pressure-resistant indwelling needle can ensure that the contrast agent enters the blood vessel at high flow rate and high pressure, improves the success rate of contrast agent injection, has the function of high pressure resistance, and is widely used in CT enhancement examination.
The installation guide rail 116 is formed in the catheter base 11, the buckle 151 of the pressure-resistant buckle 15 is aligned with the installation guide rail 116 of the catheter base and is pushed to the bottom and then rotated by 90 degrees, namely, the buckle 151 is installed in the second clamping groove hole 115 of the catheter base 11, and the mechanical locking is not easy to loosen.
The condition that the outer sheath falls off occasionally appears in the process of transportation of the indwelling needle, and a user is difficult to pull out due to too large resistance when pulling out the outer sheath, and even the user is easy to be stabbed. In an alternative embodiment, the catheter hub 11 is provided with a sheath anti-slip ring 117 at the head end, the sheath anti-slip ring 117 comprising a plurality of layers of anti-slip rings, and the sheath anti-slip ring 117 is used for installing an outer sheath. The multilayer anti-drop ring is in line contact with the outer sheath. For the design of current conventional one deck ring and the design of face contact, when the cooperation size is not good between one deck ring and sheath causes the sheath to drop in this embodiment, several other layers of rings can play the effect of anticreep, greatly reduced the probability that outside sheath drops. When a nurse needs to pull out the external sheath to use the indwelling needle, the annular design of line contact between the nurse and the external sheath reduces the friction area, so that the resistance of pulling out the external sheath is reduced, and the nurse can pull out the indwelling needle easily during use.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (9)
1. An indwelling needle, comprising an indwelling catheter assembly (1) and an introducer needle assembly (2);
the indwelling catheter assembly (1) comprises a catheter seat (11) and a catheter (12), wherein the catheter (12) is arranged on the catheter seat (11), and a first clamping slot hole (114) is formed in the catheter seat (11);
the puncture needle assembly (2) comprises a needle seat (21), a needle tube (22), a puncture-preventing device (23) and an anti-falling baffle (24), and the catheter seat (11) is sleeved in the needle seat (21);
the needle-prick preventing device (23) comprises an elastic part (231), the elastic part (231) is movably mounted in the first clamping groove hole (114), one end of the needle tube (22) is fixed in the needle seat (21), the other end of the needle tube (22) sequentially penetrates through the needle-prick preventing device (23) and the guide tube (12) and extends out of the guide tube (12), the anti-falling baffle (24) wraps the periphery of the needle-prick preventing device (23), and the anti-falling baffle (24) is used for preventing the needle tube (22) from sliding out of the side face of the needle-prick preventing device (23) when the needle tube (22) is withdrawn;
the needle tube (22) comprises a blocking part (221) and a needle tip part (222), and when the needle tube (22) is inserted, the elastic part (231) is clamped in the first clamping groove hole (114);
when the needle tube (22) is withdrawn, the blocking part (221) is withdrawn and blocked on the inner part of the tail end of the needle-prick preventing device (23), the needle tip part (222) is withdrawn into the needle-prick preventing device (23), the elastic element (231) is disengaged from the first clamping groove hole (114), and the needle-prick preventing device (23) is withdrawn from the catheter seat (11) together with the needle tube (22).
2. The indwelling needle according to claim 1, wherein the needle penetration preventing device (23) further comprises a hook stopper (232), a needle penetration hole (233) is formed at the bottom of the needle penetration preventing device (23), and the other end of the needle tube (22) passes through the needle penetration hole (233) and the hook stopper (232) in sequence.
3. The indwelling needle according to claim 2, wherein the barrier (221) is of a size larger than the diameter of the puncture hole (233).
4. The indwelling needle according to claim 2, wherein the hook stopper (232) comprises two hook stoppers, the other end of the needle tube (22) passing through a gap between the two hook stoppers;
after the needle tip part (222) is retracted into the anti-needle-prick device (23), the two hook blocking pieces are folded.
5. The indwelling needle according to claim 1, wherein the catheter hub (11) is provided with a first (111), a second (112) and a third (113) channel;
the indwelling catheter assembly (1) further comprises an isolating plug (14), the isolating plug (14) being mounted in the first passageway (111), the catheter (12) being disposed in the second passageway (112), the third passageway (113) being for connection to an external extension tube.
6. The indwelling needle according to claim 5, wherein the catheter (12) is riveted to the lumen of the second channel (112) by a rivet (13).
7. The indwelling needle according to claim 1, wherein the hub (21) comprises a handle (211), a concave needle holding portion (212) is formed on an end face of the handle (211), and a plurality of anti-slip strips (213) are provided on the concave needle holding portion (212).
8. The indwelling needle according to claim 1, wherein a pressure-resistant buckling part (15) is provided in the catheter hub (11), the pressure-resistant buckling part (15) comprises a main body (152), a buckle (151) is provided on the main body (152), and the main body (152) is provided with a through hole for the needle tube (22) to pass through;
the catheter seat (11) is provided with a second clamping groove hole (115), and the buckle (151) is clamped in the second clamping groove hole (115).
9. The indwelling needle according to claim 1, wherein the catheter hub (11) has a sheath anti-slip ring (117) at the head end, the sheath anti-slip ring (117) comprising a plurality of layers of anti-slip rings, the sheath anti-slip ring (117) being used for mounting an external sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122610136.2U CN217138849U (en) | 2021-10-28 | 2021-10-28 | Remaining needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122610136.2U CN217138849U (en) | 2021-10-28 | 2021-10-28 | Remaining needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217138849U true CN217138849U (en) | 2022-08-09 |
Family
ID=82660038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122610136.2U Active CN217138849U (en) | 2021-10-28 | 2021-10-28 | Remaining needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217138849U (en) |
-
2021
- 2021-10-28 CN CN202122610136.2U patent/CN217138849U/en active Active
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