CN218792431U

CN218792431U - Puncture needle for hemodialysis capable of relieving pain

Info

Publication number: CN218792431U
Application number: CN202221134048.8U
Authority: CN
Inventors: 平原; 蔡红; 王旭; 王永红; 杨强; 杨中芬
Original assignee: Chongqing Hechuan Traditional Chinese Medicine Hospital
Current assignee: Chongqing Hechuan Traditional Chinese Medicine Hospital
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2023-04-07
Anticipated expiration: 2032-05-11

Abstract

The utility model discloses a puncture needle for hemodialysis capable of relieving pain, which belongs to the technical field of puncture needles and particularly comprises a needle handle consisting of a handle body and a butt joint part, wherein a puncture unit is inserted in the needle handle in a sliding way, and a catheter is also fixed at the front end of the needle handle; the puncture unit is composed of a needle body and a bulb, and the surface of the front half section of the needle body is provided with an inwards concave observation groove. The utility model discloses a solid structure design to the needle body front end in the puncture unit, and observe the groove at puncture syringe needle inclined plane top design, make this needle body possess the low resistance puncture effect of solid syringe needle simultaneously, and the timely blood return observation effect of hollow syringe needle, can make operating personnel in time know the puncture condition, can also shorten the distance between pipe front end and the syringe needle simultaneously, thereby it is more convenient to make follow-up drawing needle ejector sleeve operation, shorten the time that this flow is used, thereby it is painful because of the secondary that the puncture operating problem brought to reduce the patient.

Description

Puncture needle for hemodialysis capable of relieving pain

Technical Field

The utility model relates to a puncture needle technical field, in particular to a puncture needle for hemodialysis, which can relieve pain.

Background

At present, puncture needles used for arteriovenous puncture in hemodialysis treatment are trocar needles, inner needles are metal puncture needle bodies, a catheter is sleeved outside the metal puncture needle bodies for leading out or leading in blood, and the puncture needle bodies inside are mainly divided into two types for conveniently observing puncture conditions during the arteriovenous puncture;

one type is a tubular needle, the front end puncture end of the needle body is annular, blood can be directly led into an observation tube at the tail end through a needle head, the needle body is also the most common type and the most widely used type in the existing arteriovenous puncture, but the front end of the puncture needle is hollow and annular, so that the pain feeling brought to a patient during puncture is obvious;

another kind of puncture needle body is in order to make the resistance reduce during the puncture, design the puncture end of hollow needle body into the blind end, the blood guide hole that is used for returning blood when observing the puncture condition opens in the position that the needle body is close to the needle point, belong to the side opening, the pointed end of pjncture needle must all get into behind the blood vessel, and impel until blood can get into pjncture needle inner catheter through the opening, the metal needle body gets into the vascular degree of depth darker during the puncture, touch subtend vascular wall very easily, cause the secondary damage of blood vessel, and in order not to influence the blood return, the front end of outside catheter often can be apart from 3-4 millimeters needle point, this staff when leading to follow-up operation takes time when taking out puncture needle body and impel the catheter, it is long, lead to take out the operation process of needle push tube and bring the secondary pain to the patient.

Therefore, an improved hemodialysis needle is designed to relieve pain of patients during arteriovenous puncture.

SUMMERY OF THE UTILITY MODEL

To solve the above problems in the background art, the present invention provides a puncture needle for hemodialysis which can alleviate pain.

The utility model discloses a puncture needle for hemodialysis capable of relieving pain, which comprises a needle handle consisting of a handle body and a butt joint part, wherein the two sides of the needle handle are also integrally formed with a handheld part for pushing the needle, the inner side of the butt joint part is provided with a cylindrical cavity, the inner side of the cavity is glued and fixed with a plurality of cross-shaped leakage-proof rubber flaps side by side, the interior of the needle handle is inserted with a puncture unit in a sliding way, and the front end of the needle handle is also fixed with a catheter; the puncture unit comprises needle body, bulb, the bulb is located the needle body tail end and with needle body integrated into one piece, the needle body front end is the puncture syringe needle, the observation groove of indent is offered along needle body length direction to the surface of the first half section of needle body and the position that corresponds puncture syringe needle tangent plane top, the inside of the second half section of needle body is hollow form and inside for releasing the chamber, the one end of releasing the chamber communicates with each other through-hole and observation groove, and its other end that releases the chamber extends to behind the bulb tail end and communicates with each other with the external world, the external fixation of needle body tail end has the plug, the cavity one end interference fit at this plug one end and connecting portion middle part.

Through the solid structure design to the needle body front end in the puncture unit, structural design with the help of the puncture needle head, and observe the groove at puncture needle head inclined plane top design, cooperate the pressure release chamber of needle body tail end, make this needle body possess the effect of the reduction puncture resistance that solid syringe head brought simultaneously, and the timely blood return observation effect of hollow syringe head, can make operating personnel in time know the puncture condition, can effectively avoid the syringe needle to impel too much and cause the secondary injury to the vascular wall, above-mentioned structural design can also make the pipe front end that outside cover was established can extend to the inclined plane end top position of puncture needle head completely simultaneously, shorten the distance between pipe front end and the syringe head, thereby make follow-up drawing needle ejector sleeve operation more convenient, shorten this flow time, thereby reduce the secondary pain that the patient brought because of puncture operation problem.

As a further improvement of the utility model, the tangent plane of the puncture needle head is designed to be an inclined plane, the inclination angle of the tangent plane of the puncture needle head is 30-35 degrees, and the position of the tangent plane of the puncture needle head close to the knife edge is integrally formed with an arc-shaped bulge.

The arc-shaped bulge is designed on the section of the puncture needle head to strengthen the strength of the needle point.

As the utility model discloses a further improvement, the needle body front end is solid construction, and needle body surface etching has the scale mark, uses the millimeter to be a little unit between scale mark and the scale mark, and every five millimeters are a big unit, and the inslot of the scale mark between every big unit thereof is electroplated with the mark of different colours, and the scale mark is the seal-carving design of indent on the needle body surface, closely laminate between the surface of the first half section of needle body and the pipe inner wall.

Through the design, a doctor can observe the puncture depth of the puncture needle during puncture more favorably, and the puncture success rate is favorably improved.

As a further improvement of the utility model, the outside of the connecting part is in threaded connection with a sealing cover for fixing the puncture unit.

As a further improvement, the tube wall thickness of the catheter is progressively decreased from the tail end to the front end, and the front end tube of the catheter is arranged at the top end position of the tangent plane of the puncture needle head.

According to the gradual change design of catheter thickness, can make the hardness of catheter front end than present puncture needle catheter hardness lower more soft, can make the catheter alleviate the sense of touching that produces between catheter front end and the vascular wall when promoting to reach and alleviate the pain that the arteriovenous puncture brought.

As the utility model discloses a further improvement, cross leak protection rubber lamella is whole to constitute by an elasticity plastic rubber piece, and the middle part of elastic rubber piece is equipped with the level and smooth incision of cross, and the middle part of this elastic rubber piece is coniform structural design and most advanced towards the puncture syringe needle direction, the thickness of elastic rubber piece is gradually by thick to thin gradual change setting from the edge to the centre.

The design of cross leak protection rubber lamella can make puncture unit take out from the pipe after, cross leak protection rubber lamella resets and can play the leak protection effect, avoids blood to flow out from the cavity of butt joint portion.

As a further improvement, the utility model discloses a design of integrated into one piece is adopted between the handle body and the butt joint portion, the outside cover of pipe has a protective sleeve, and this protective sleeve's one end and handle body activity are cup jointed.

As the utility model discloses a further improvement still includes the butt joint nut, butt joint nut and connecting portion threaded connection, the middle part of butt joint nut is run through and is had a hollow butt joint intubate, and the surperficial integrated into one piece that is located the inside part of butt joint nut of this butt joint intubate has the annular holding ring that is used for implementing the location to the butt joint nut, the front end of butt joint intubate is pegged graft and is communicated with each other at the internal portion of handle and with the pipe, and closely laminates between the surface of butt joint intubate front end and the internal portion of handle's passageway inner wall, the tail end fixation of butt joint intubate has blood transfusion tube.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses a solid structure design to the needle body front end in the puncture unit, structural design with the help of the puncture syringe needle, and in puncture syringe needle inclined plane top design observation groove, the decompression chamber of cooperation needle body tail end, make the puncture syringe needle of this needle body front end can reach the effect of the reduction puncture resistance that solid syringe needle brought, can make the timely blood return observation effect who satisfies hollow syringe needle again, also make the pipe front end that outside cover was established can extend to the inclined plane end top position of puncture syringe needle completely simultaneously, shorten the distance between pipe front end and the syringe needle, thereby make follow-up needle push tube operation more convenient, shorten this flow time, in addition, observe the design in groove, can make the inclined plane end of puncture syringe needle in case when whole entering blood vessel, just can make blood get into the observation inslot under human self pulsation and blood pressure effect rapidly, can make operating personnel in time know the puncture condition, can effectively avoid the syringe needle to cause secondary injury to the vascular wall too much more effectively, thereby reduce the secondary pain that the patient brought because of puncture operation problem, simultaneously according to the design of pipe thickness, can make puncture syringe needle front end hardness than the hardness before reaching the soft and more the vein and promote the sense of the duct, thereby the blood vessel wall more the sense of producing when the vein is more alleviating pain.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic sectional view of the utility model before use;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is an enlarged view of the structure at B in FIG. 1;

FIG. 4 is a schematic sectional view of the present invention;

FIG. 5 is a schematic view of the structure of the inner needle body and the catheter of the present invention after combination;

fig. 6 is a schematic view of the structure of the inner needle body of the utility model.

In the figure: 1. a needle handle; 101. a handle body; 102. a docking portion; 103. a cavity; 104. a hand-held portion; 2. a puncture unit; 201. a needle body; 202. a pressure relief cavity; 203. an observation groove; 204. a through hole; 205. a puncture needle head; 206. scale lines; 207. a ball head; 3. a rubber plug; 4. cross leak-proof gel flaps; 5. a protective sleeve; 6. sealing the cover; 7. a conduit; 8. butting nuts; 9. butting the insertion pipes; 10. a positioning ring; 11. blood transfusion.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of various embodiments of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1, 2 and 3, the hemodialysis puncture needle capable of alleviating pain of the present invention includes a needle handle 1 composed of a handle body 101 and a butt joint portion 102, wherein both sides of the needle handle 1 are further integrally formed with a hand-held portion 104 for pushing the needle, the inner side of the butt joint portion 102 is provided with a cylindrical cavity 103, the inner side of the cavity 103 is glued and fixed with a plurality of cross-shaped leakage-proof rubber flaps 4 side by side, the interior of the needle handle 1 is slidably inserted with a puncture unit 2, and the front end of the needle handle 1 is further fixed with a catheter 7;

the puncture unit 2 is composed of a needle body 201, a bulb 207, the bulb 207 is located at the tail end of the needle body 201 and is integrally formed with the needle body 201, the front end of the needle body 201 is a puncture needle head 205, the surface of the front half section of the needle body 201 and the position corresponding to the top of the section of the puncture needle head 205 are provided with an inward concave observation groove 203 along the length direction of the needle body 201, the inside of the rear half section of the needle body 201 is hollow and is a pressure relief cavity 202, one end of the pressure relief cavity 202 is communicated with the observation groove 203 through a through hole 204, the other end of the pressure relief cavity 202 extends to the tail end of the bulb 207 and then is communicated with the outside, a rubber plug 3 is fixed outside the tail end of the needle body 201, one end of the rubber plug 3 is in interference fit with one end of a cavity 103 in the middle part of the connecting part; through the solid structural design to needle body 201 front end in the puncture unit 2, with the help of the structural design of puncture needle head 205, and observe groove 203 at puncture needle head 205 inclined plane top design, cooperate the decompression chamber 22 of needle body 201 tail end, make this needle body 201 possess the effect of the reduction puncture resistance that solid needle head brought simultaneously, and the timely blood return observation effect of hollow needle head, can make operating personnel in time know the puncture condition, can effectively avoid the syringe needle to impel too much to cause secondary damage to the vascular wall, above-mentioned structural design can also make the pipe 7 front end of outside cover establishing can extend to the inclined plane end top position of puncture needle head 205 completely simultaneously, shorten the distance between pipe 7 front end and the syringe needle, thereby make follow-up take out the needle ejector sleeve operation more convenient, shorten this flow spent time, thereby reduce the secondary pain that the patient brought because of puncture operating problem.

Referring to fig. 3, 5 and 6, the section of the puncturing needle 205 is designed to be a bevel, the bevel angle of the section of the puncturing needle 205 is 30-35 degrees, an arc-shaped protrusion is integrally formed at the section of the puncturing needle 205 close to the knife edge, and the arc-shaped protrusion is designed on the section of the puncturing needle 205 to enhance the strength of the needle point.

Referring to fig. 1, 5 and 6, the front end of the needle body 201 is a solid structure, the surface of the needle body 201 is etched with scale marks 206, the scale marks 206 and the scale marks 206 are in a small unit of millimeter, each five millimeters is a large unit, marks with different colors are electroplated in the groove of the scale marks 206 between the large units, the scale marks 206 are in a concave printing design on the surface of the needle body 201, the surface of the front half section of the needle body 201 is tightly attached to the inner wall of the catheter 7, and the design of the scale marks 206 is more beneficial for a doctor to observe the puncture depth of the puncture needle during puncture, thereby being beneficial to improving the puncture success rate.

Referring to fig. 1, a cover 6 is screwed on the outer side of the connecting portion to fix the puncture unit 2.

Referring to fig. 1, fig. 3, fig. 4 and fig. 5, the wall thickness of the conduit 7 decreases from the rear end to the front end, and the front end of the conduit 7 is located at the top end of the section of the puncture needle 205.

According to the gradual change design of the thickness of the catheter 7, the hardness of the front end of the catheter 7 is lower and softer than that of the existing puncture needle catheter, the touch feeling generated between the front end of the catheter 7 and the blood vessel wall can be relieved when the catheter 7 is pushed, and therefore pain caused by arteriovenous puncture is relieved.

Referring to fig. 1, the cross-shaped leakage-proof rubber flap 4 is integrally formed by an elastic rubber sheet, a cross-shaped smooth notch is formed in the middle of the elastic rubber sheet, the middle of the elastic rubber sheet is designed to be a conical structure, the tip of the elastic rubber sheet faces the direction of the puncture needle 205, the thickness of the elastic rubber sheet gradually changes from thick to thin from the edge to the middle, and the cross-shaped leakage-proof rubber flap 4 is designed to enable the puncture unit 2 to have a leakage-proof effect after the cross-shaped leakage-proof rubber flap 4 is reset after being pulled away from the catheter 7, so that blood is prevented from flowing out of the cavity 103 of the butt joint portion 102.

Referring to fig. 1, the handle 101 and the abutting portion 102 are integrally formed, a protecting sleeve 5 is sleeved outside the conduit 7, and one end of the protecting sleeve 5 is movably sleeved with the handle 101.

Referring to fig. 4, the docking device further includes a docking nut 8, the docking nut 8 is in threaded connection with the connecting portion, a hollow docking insertion tube 9 penetrates through the middle portion of the docking nut 8, an annular positioning ring 10 for positioning the docking nut 8 is integrally formed on the surface of the portion, located inside the docking nut 8, of the docking insertion tube 9, the front end of the docking insertion tube 9 is inserted into the handle 101 and is communicated with the guide tube 7, the surface of the front end of the docking insertion tube 9 is tightly attached to the inner wall of the channel inside the handle 101, and a blood transmission tube 11 is fixed to the tail end of the docking insertion tube 9.

When the utility model is used: after the medical staff prepares for the operation before puncturing, the puncture needle is taken out, the protective sleeve 5 is taken down, the puncturing operation is carried out according to the actual physical condition of the patient and the puncture operation standard requirement, the sealing cover 6 is taken down before puncturing, the pressure relief cavity 202 is communicated with the outside, so that after the puncture needle head 205 enters the blood vessel, the blood rapidly enters the observation groove 203 under the action of blood pressure pulsation, so that a doctor can know the puncturing condition in time, the needle pushing is stopped, then the needle drawing and the tube pushing operation of the catheter 7 are carried out simultaneously, the front end part of the catheter 7 enters the blood vessel, when the puncture unit 2 is drawn out, the four rubber flaps of the cross leak-proof rubber flap 4 are reset and closed to form a closed end, so that the blood is prevented from flowing out from the butt joint part 002, finally, the blood vessel 11 is matched with the butt joint insertion tube 9 through the butt joint nut 8 to be connected with the needle handle 1, and finally, the puncture operation can be completed by fixing the puncture needle and the blood vessel 11.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides a puncture needle for hemodialysis that can alleviate pain, includes needle handle (1) of constituteing by handle body (101) and butt joint portion (102), and the both sides of needle handle (1) still integrated into one piece have be used for pushing away handheld portion (104) of needle operation, its characterized in that: a cylindrical cavity (103) is arranged on the inner side of the butt joint part (102), a plurality of cross-shaped leakproof glue valves (4) are glued and fixed on the inner side of the cavity (103) side by side, a puncture unit (2) is inserted into the needle handle (1) in a sliding manner, and a catheter (7) is further fixed at the front end of the needle handle (1);

puncture unit (2) comprise needle body (201), bulb (207) be located needle body (201) tail end and with needle body (201) integrated into one piece, needle body (201) front end is puncture syringe needle (205), the observation groove (203) of indent is seted up along needle body (201) length direction to the surface of needle body (201) first half section and the position that corresponds puncture syringe needle (205) tangent plane top, the inside of needle body (201) second half section is hollow form and inside for relieving pressure chamber (202), the one end of relieving pressure chamber (202) communicates with each other through-hole (204) and observation groove (203), and the other end of its relieving pressure chamber (202) communicates with each other with the external world after extending to bulb (207) tail end, the outside of needle body (201) tail end is fixed with plug (3), cavity (103) one end interference fit at this plug (3) one end and connecting portion middle part.

2. A hemodialysis needle capable of relieving pain according to claim 1, comprising: the tangent plane of the puncture needle head (205) is designed to be an inclined plane, the inclination angle of the tangent plane of the puncture needle head (205) is 30-35 degrees, and an arc-shaped bulge is integrally formed at the position, close to the knife edge, of the tangent plane of the puncture needle head (205).

3. A hemodialysis needle capable of relieving pain according to claim 1, comprising: the utility model discloses a catheter, including needle body (201), needle body (201) front end is solid construction, and needle body (201) surface etching has scale mark (206), and scale mark (206) are the impression design of indent on needle body (201) surface, closely laminate between the surface of half section before needle body (201) and pipe (7) inner wall.

4. A puncture needle for hemodialysis that can alleviate pain according to claim 1, characterized in that: the outer side of the connecting part is in threaded connection with a sealing cover (6) for fixing the puncture unit (2).

5. A puncture needle for hemodialysis that can alleviate pain according to claim 1, characterized in that: the wall thickness of the conduit (7) is designed to be reduced from the tail end to the front end, and the front end of the conduit (7) is arranged along the top end of the section of the puncture needle head (205).

6. A puncture needle for hemodialysis that can alleviate pain according to claim 1, characterized in that: the cross-shaped leakage-proof rubber flap (4) is integrally formed by an elastic rubber sheet, a cross-shaped smooth notch is formed in the middle of the elastic rubber sheet, the middle of the elastic rubber sheet is in a conical structural design, the tip of the elastic rubber sheet faces the direction of the puncture needle head (205), and the thickness of the elastic rubber sheet gradually changes from thick to thin from the edge to the middle.

7. A hemodialysis needle capable of relieving pain according to claim 1, comprising: the handle body (101) and the butt joint part (102) are integrally formed, a protective sleeve (5) is sleeved on the outer side of the guide pipe (7), and one end of the protective sleeve (5) is movably sleeved with the handle body (101).

8. A puncture needle for hemodialysis that can alleviate pain according to claim 1, characterized in that: still include butt joint nut (8), its characterized in that: the butt joint nut (8) is in threaded connection with the connecting portion, a hollow butt joint insertion pipe (9) penetrates through the middle of the butt joint nut (8), an annular positioning ring (10) used for positioning the butt joint nut (8) is integrally formed on the surface of the inner portion, located in the butt joint nut (8), of the butt joint insertion pipe (9), the front end of the butt joint insertion pipe (9) is inserted into the handle body (101) and communicated with the guide pipe (7), the surface of the front end of the butt joint insertion pipe (9) is tightly attached to the inner wall of a channel in the handle body (101), and a blood conveying pipe (11) is fixed to the tail end of the butt joint insertion pipe (9).