CN217286000U - An epidural double-catheter puncture needle - Google Patents

Abstract

The utility model discloses an epidural double catheter puncture needle, comprising a puncture needle cover, one end of the puncture needle cover is provided with a puncture needle, and the other end of the puncture needle cover is provided with a puncture needle handle, the puncture needle The inner cavity of the sleeve is hollow, and the puncture needle handle is provided with a circular through hole corresponding to the inner cavity of the puncture needle sleeve, the inner cavity of the puncture needle sleeve is movably inserted and connected with an anti-blocking piston, and one end of the anti-blocking piston corresponding to the puncture needle handle is provided with an anti-blocking piston. A catheter guide rod, the catheter placement guide rod is fixedly connected with a catheter placement seat after penetrating the puncture needle handle, the puncture needle cover is provided with an outlet on both sides of one end of the puncture needle head, and the two sides of the catheter placement guide rod correspond to the outlet tube The mouth is provided with a circular guide groove, and the device can be inserted into double catheter anesthesia, realizing the advantages of bidirectional drug delivery, expanding the scope of anesthesia, good blocking effect, simple structure, easy operation, and no need to turn the needle body, effectively avoiding The spinal cord is injured by the shaking of the needle body, and the safety of the use of the puncture needle is further improved.

Description

An epidural double-catheter puncture needle

technical field

The utility model belongs to the technical field of medical devices, in particular to an epidural double catheter puncture needle.

Background technique

Epidural anesthesia has the advantages of perfect pain relief, good muscle relaxation effect, mild physiological disturbance and simple operation. It is one of the operations widely selected by hospitals at all levels in China. Clinically, puncture needles used in epidural anesthesia for patients are mainly composed of needle body, needle handle and needle core. However, they have the disadvantage that the block plane range is not wide and the block effect is not good.

For example, the epidural double-catheter puncture needle disclosed in the authorization announcement number CN226841.1 has the advantages of realizing a puncture point and placing a double-catheter anesthesia without damaging human tissue or increasing the pain of the patient. It can achieve bidirectional drug delivery, expand the scope of anesthesia, and achieve good blocking effect. It has a simple structure and is easy to operate. However, it is difficult to fix the needle after puncture, and it is easy to damage the spinal cord, which itself increases the difficulty of medical staff. , and then rotating the needle body is risky and easy to damage. For this reason, we propose an epidural double-catheter puncture needle.

Utility model content

The purpose of the present utility model is to provide an epidural double catheter puncture needle to solve the problems raised in the above background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions: an epidural double-catheter puncture needle, comprising a puncture needle cover, one end of the puncture needle cover is provided with a puncture needle, and the other end of the puncture needle cover is provided with a puncture needle. A puncture needle handle, the inner cavity of the puncture needle cover is hollow, and the puncture needle handle is provided with a circular through hole corresponding to the inner cavity of the puncture needle cover, and an anti-blocking piston is movably inserted into the inner cavity of the puncture needle cover, and the anti-blocking piston corresponds to the inner cavity of the puncture needle cover One end of the puncture needle handle is provided with a catheter placement guide rod, the catheter placement guide rod penetrates through the puncture needle handle and is fixedly connected with a catheter placement seat, and two sides of the puncture needle sleeve close to one end of the puncture needle head are provided with an outlet port, which is placed on the puncture needle handle. The two sides of the tube guide rod are provided with circular guide grooves corresponding to the tube outlet. The nozzles are overlapped, and the nozzles are provided on the tube seat corresponding to the circular guide grooves on both sides of the guide rod.

Preferably, the outer side of the puncture needle cover is provided with a puncture guide sleeve, and the two sides of the puncture guide sleeve are provided with angle adjustment shafts, the lower side of the puncture needle sleeve is provided with a puncture stabilization seat, and the angle adjustment shaft is rotatably installed at the end of the puncture stabilizer.

Preferably, connecting tapes are provided on both sides of the puncture stabilization seat, and a non-slip silicone pad is provided on the bottom surface of the puncture stabilization seat.

Preferably, a limit fixing slot is provided on one side of the puncture stabilization seat corresponding to the angle adjustment shaft, and a rubber limit block is inserted into the limit fixing slot.

Preferably, the center of the upper end of the puncture guide sleeve is threadedly connected with a needle sleeve fixing knob, and the inner end of the needle sleeve fixing knob penetrates the side wall of the puncture guide sleeve and abuts against the outer wall of the puncture needle sleeve.

Preferably, the inner end of the needle cover fixing knob is provided with a rubber contact pad.

Preferably, the anti-blocking piston is made of polytetrafluoroethylene, and the outer wall of the catheter placement guide rod is in clearance fit with the inner wall of the puncture needle sleeve.

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

(1), the epidural double-catheter puncture needle, through the set puncture needle cover, the outlet on both sides of the puncture needle cover can be inserted into the catheter respectively, through the set anti-blocking piston and the catheter guide rod, the anti-blocking piston It can block the outlet port when the puncture needle sleeve is inserted to avoid the blockage of the outlet port. The catheter guide rod can be guided when the catheter is inserted, which is convenient for the insertion of the catheter. The device can be placed in double catheter anesthesia to achieve bidirectional The advantages of drug administration and expansion of anesthesia, good blocking effect, simple structure, easy operation, and no need to turn the needle body, effectively avoid the needle body shaking and damage the spinal cord, and further improve the safety of the puncture needle.

(2) The epidural double-catheter puncture needle is provided with a puncture guide sleeve, which is convenient for the angle of the puncture needle sleeve to be fixed, thereby improving the stability of the needle body when it is inserted. The rubber stopper inserted in the fixed slot can rub against the angle adjustment shaft to fix the angle adjustment shaft, thereby fixing the rotation angle of the puncture stable seat, and then fixing the inclination angle of the puncture needle cover when puncturing, which improves the puncture operation during puncture. The stability of the needle cover avoids injury to the spinal cord.

Description of drawings

Fig. 1 is the perspective view of the utility model;

Fig. 2 is the side sectional view of the utility model;

Fig. 3 is the sectional structure diagram corresponding to the central axis of the puncture needle sleeve of the present invention;

Figure 4 is a side view of the utility model.

In the figure: 1. Puncture needle cover; 2. Puncture needle; 3. Puncture needle handle; 4. Cannula seat; 5. Outlet; 6. Cannula; 7. Anti-blocking piston; 8. Cannula guide ; 9. Stable puncture seat; 10. Connecting tape; 11. Puncture guide sleeve; 12. Angle adjustment shaft; 13. Limit fixing slot; 14. Needle sleeve fixing knob.

Detailed ways

Please refer to FIGS. 1 to 4 , the present invention provides an epidural double-catheter puncture needle, comprising a puncture needle cover 1 , one end of the puncture needle cover 1 is provided with a puncture needle 2 , and the other end of the puncture needle cover 1 is provided with a puncture needle 2 . There is a puncture needle handle 3, the inner cavity of the puncture needle cover 1 is hollow, and the puncture needle handle 3 is provided with a circular through hole corresponding to the inner cavity of the puncture needle cover 1. One end of the blocking piston 7 corresponding to the puncture needle handle 3 is provided with a catheter placement guide rod 8 , the catheter placement guide rod 8 is fixedly connected to the catheter placement seat 4 after passing through the puncture needle handle 3 , and the puncture needle cover 1 is provided on both sides of one end of the puncture needle head 2 . There is a pipe outlet 5, and two sides of the pipe placement guide rod 8 are provided with circular guide grooves corresponding to the pipe outlet port 5, and one end of the circular guide groove on the side of the pipe placement guide rod 8 close to the pipe outlet port 5 is arranged in an arc shape outwards, In addition, the inner end of the circular guide groove coincides with the outlet port 5 , and the tube placement port 6 is provided on the tube placement seat 4 corresponding to the circular guide grooves on both sides of the tube placement guide rod 8 .

In this embodiment, preferably, a puncture guide sleeve 11 is provided on the outer side of the puncture needle cover 1, and the angle adjustment shafts 12 are provided on both sides of the puncture guide cover 11, and the puncture stabilization seat 9 is provided on the lower side of the puncture needle cover 1, The angle adjustment shaft 12 is rotatably mounted on the end of the puncture stabilization seat 9; the puncture guide sleeve 11 provided facilitates the angle fixation of the puncture needle sleeve 1, thereby improving the stability of the needle body during insertion.

In this embodiment, preferably, connecting tapes 10 are provided on both sides of the puncture stabilizer 9, and a non-slip silicone pad is provided on the bottom surface of the puncture stabilizer 9; The fixation of the watch can assist the fixation of the puncture needle cover 1 .

In this embodiment, preferably, a limit fixing slot 13 is provided at one side of the puncture stabilization base 9 corresponding to the angle adjustment shaft 12, and a rubber limit block is inserted into the limit fixing slot 13; Slot 13, the rubber limit block inserted in the limit fixing slot 13 can rub against the angle adjustment shaft 12 to fix the angle adjustment shaft 12, thereby fixing the rotation angle of the puncture stabilizer 9, and then fixing the puncture needle sleeve 1 puncture The inclined angle at the time of puncture improves the stability of the puncture needle cover 1 during the puncture operation and avoids damage to the spinal cord.

In this embodiment, preferably, a needle cover fixing knob 14 is threadedly connected to the center of the upper end of the puncture guide sleeve 11, and the inner end of the needle cover fixing knob 14 penetrates the side wall of the puncture guide sleeve 11 and abuts against the outer wall of the puncture needle cover 1; The provided needle cover fixing knob 14 is convenient to fix the puncture needle cover 1 after the puncture needle cover 1 is punctured, and is convenient for subsequent cannulation and anesthesia operations.

In this embodiment, preferably, the inner end of the needle cover fixing knob 14 is provided with a rubber contact pad; through the setting of the rubber contact pad, the needle cover fixing knob 14 is more firmly fixed to the puncture needle cover 1 to prevent the puncture needle cover 1 from slipping .

In this embodiment, preferably, the anti-blocking piston 7 is made of polytetrafluoroethylene, and the outer wall of the catheter guide rod 8 is matched with the inner wall of the puncture needle cover 1 in a gap; The movement resistance of the blocking piston 7 is convenient for the anti-blocking piston 7 to move.

The working principle and use process of the utility model: when the device is in use, the anti-blocking piston 7 is pulled out through the provided puncture needle cover 1, so that the anti-blocking piston 7 is overlapped with the outlet port 5, and the anti-blocking piston 7 can be inserted into the puncture needle. When the sleeve 1 is pierced, the outlet port 5 is blocked to avoid the blockage of the outlet port 5. After adjusting the angle of the puncture needle sleeve 1, it is inserted into the patient's dura, and the outlet port 5 on both sides of the puncture needle sleeve 1 can be inserted into the catheter respectively. Carry out anesthesia operation, through the anti-blocking piston 7 and the catheter placement guide rod 8 provided, the catheter placement guide rod 8 can be guided when the catheter is inserted, which is convenient for the insertion of the catheter. The advantages of expanding the scope of anesthesia, the function of good blocking effect, simple structure, easy operation, and no need to turn the needle body, effectively avoid the needle body shaking and damage the spinal cord, and further improve the safety of the puncture needle.

Claims (7)

1. An epidural double catheter puncture needle, comprising a puncture needle cover (1), characterized in that: one end of the puncture needle cover (1) is provided with a puncture needle head (2), and the puncture needle cover (1) The other end of the puncture needle handle (3) is provided with a puncture needle handle (3). An anti-blocking piston (7) is movably inserted into the inner cavity of the needle cover (1), and an end of the anti-blocking piston (7) corresponding to the puncture needle handle (3) is provided with a catheter placement guide rod (8). (8) After penetrating through the puncture needle handle (3), a cannula seat (4) is fixedly connected, and the puncture needle cover (1) is provided with an outlet (5) on both sides of one end of the puncture needle cover (1) close to one end of the puncture needle (2), and is placed Circular guide grooves are provided on both sides of the tube guide rod (8) corresponding to the tube outlet (5), and one end of the circular guide groove on the side of the tube guide rod (8) close to the tube outlet (5) is arc-shaped outward. and the inner end of the circular guide groove coincides with the pipe outlet (5), and the pipe setting seat (4) is provided with a pipe setting port (6) corresponding to the circular guide grooves on both sides of the pipe setting guide rod (8). . 2. The epidural double-catheter puncture needle according to claim 1, characterized in that: a puncture guide sleeve (11) is provided on the outer side of the puncture needle sleeve (1), and the puncture guide sleeve (11) ) is provided with an angle adjustment shaft (12) on both sides, the puncture needle cover (1) is provided with a puncture stabilization seat (9) on the lower side, and the angle adjustment shaft (12) is rotatably installed on the end of the puncture stabilization seat (9). department. 3. The epidural double catheter puncture needle according to claim 2, characterized in that: both sides of the puncture stable seat (9) are provided with a connecting tape (10), and the puncture stable seat (9) is provided with a connecting tape (10) on both sides. ) is provided with a non-slip silicone pad on the underside. 4. The epidural double-catheter puncture needle according to claim 2, characterized in that: a limited fixing slot (13) is provided at the corresponding angle adjustment shaft (12) on one side of the puncture stabilization seat (9). ), and a rubber limit block is inserted into the limit fixing slot (13). 5. The epidural double-catheter puncture needle according to claim 2, wherein the center of the upper end of the puncture guide sleeve (11) is threadedly connected with a needle sleeve fixing knob (14), and the needle sleeve is fixed The inner end of the knob (14) penetrates the side wall of the puncture guide sleeve (11) and abuts against the outer wall of the puncture needle sleeve (1). 6. The epidural double-catheter puncture needle according to claim 5, wherein a rubber contact pad is provided at the inner end of the needle cover fixing knob (14). 7. The epidural double-catheter puncture needle according to claim 1, characterized in that: the anti-blocking piston (7) is made of polytetrafluoroethylene, and the outer wall of the catheter-placement guide rod (8) is connected to the puncture The inner wall of the needle sleeve (1) is clearance fit.

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