CN103054632B - Reverse vessel puncture device for intervention - Google Patents

Abstract

The invention discloses a reverse blood vessel puncture device for intervention, which includes a catheter. A positioning channel and a puncture channel are arranged in parallel in the axial direction in the catheter. The outlet of the puncture channel is located on the side wall near the front end of the catheter. A puncture needle fixer is provided in a reciprocating and sliding manner along the axial direction of the puncture channel, and a fixing member for fixing the puncture guidewire needle fixer in the puncture channel is also included. Compared with the traditional forward puncture method, the puncture device of the present invention is used to assist in vascular puncture, and reverse puncture can be performed on special blood vessels in the complex interventional treatment process. The technical difficulty of puncture, while reducing the patient's pain and economic burden, makes complex and difficult operations simple and easy.

Description

Reverse Vascular Puncturer for Intervention

technical field

The invention relates to a medical operation instrument, in particular to a reverse blood vessel puncture device for intervention for reducing the difficulty of blood vessel puncture.

Background technique

Vascular puncture technology is widely used in interventional therapy or angiography, no matter what kind of interventional therapy or angiography, blood vessel puncture technology is required. Simple superficial vascular puncture technique is not difficult, but some complex interventional treatments require multiple punctures, and vascular puncture in some parts is quite difficult. For example, the left common carotid artery needs to be punctured when performing the chimney technique of the left common carotid artery. At this time, the puncture is more difficult, and blood vessels are usually cut, especially for beginners or obese patients, it is more difficult to puncture the left common carotid artery . The current vascular puncture techniques all adopt the antegrade puncture method, that is, first determine the specific location of the site to be punctured, and then reach the site to be punctured by guide wire traction or direct puncture from a suitable position on the body surface. Antegrade puncture is only suitable for superficial parts of the body surface where vascular pulsation can be felt. Blood vessels in other slightly deeper parts of the body surface cannot be punctured with the current antegrade blood vessel puncture technique, especially for obese patients.

In view of the above shortcomings, it is necessary to improve the existing blood vessel puncture method, so that it can perform blood vessel puncture on any part of the body surface, so as to solve the shortcomings of the existing technology.

Contents of the invention

In view of this, the purpose of the present invention is to provide an interventional blood vessel reverse puncture device for patients and operators who sometimes need to perform blood vessel puncture at a special part in the complex interventional treatment process, and it is difficult to perform percutaneous blood vessel puncture in this part. Using it to assist in blood vessel puncture at the special part greatly reduces the technical difficulty of the operator, and also reduces the patient's pain and economic burden, and simplifies the complex puncture technique.

The purpose of the present invention is achieved through the following technical solutions: a reverse blood vessel puncture device for intervention, including a catheter, a positioning channel and a puncture channel are arranged in parallel in the axial direction in the catheter, and the outlet of the puncture channel is located on the side wall near the front end of the catheter, A puncture guide wire fixer is provided in the puncture channel near the tail end in a manner that can reciprocate and slide axially along the puncture channel, and also includes a fixing member for fixing the puncture needle fixer in the puncture channel.

Further, a cavity with a diameter larger than the diameter of the puncture channel is provided along the axial direction of the puncture needle near the tail end in the puncture channel, and the puncture guide wire holder is a hollow tube arranged in the cavity, and the side wall of the hollow tube is A fastening screw for fastening the puncture needle is arranged radially; a strip-shaped hole is provided on the side wall of the catheter corresponding to the cavity for the fastening screw to reciprocate and slide along the axial direction of the catheter. The strip-shaped hole, positioning The channel and the puncture channel are on the same plane, and the fastening screw is set on the side wall of the hollow tube in a threaded manner through the strip hole; the fixing part is sleeved on the fastening screw and has an outer diameter larger than the width of the strip hole compression nut.

Further, the front end of the puncture channel is a transition of a circular arc segment.

Further, the through hole in the hollow tube is a square hole.

Further, the front end of the pipe wall of the conduit is chamfered.

Further, the diameter a of the positioning channel is 0.889mm.

Further, the diameter b of the puncture channel is 0.4572mm.

The use method and working principle of the reverse blood vessel puncture device for intervention in the present invention are as follows: for a more intuitive illustration, taking the puncture of the left carotid artery as an example, after the preoperative preparation of the patient is completed, the patient is placed in the supine position, and the conventional femoral artery puncture is placed at 8F. After the vascular sheath, take a positioning guide wire (usually a 0.035-inch common guide wire) and enter the left common carotid artery first, fix the positioning guide wire, and then pass the other end of the positioning guide wire (in vitro end) into the reverse blood vessel puncture device for intervention At the same time, the puncture guide wire needle is inserted into the puncture channel, and the needle is placed at the front port of the puncture channel, but the side wall of the catheter cannot be exposed; Fix the puncture guide wire fixer, and then insert the front end of the puncture catheter into the left common carotid artery under the guidance of the positioning guide wire, disinfect and local anesthetize the puncture site, and use ordinary medical adhesive tape, etc. to place an ordinary 0.035 The inch guide wire is fixed on the body surface to be punctured. Rotate the trocar, adjust the positioning guide wire, the puncture guide wire needle and the body surface positioning guide wire on the same plane, loosen the fixing part, and quickly push the puncture guide wire needle holder forward along the catheter axis, so that the puncture guide wire needle automatically The through hole on the side wall of the catheter is pierced through the blood vessel wall to the outside of the skin. At this time, the assistant fixes the puncture guide wire outside the skin, and the operator takes out the reverse vessel puncture device for intervention, leaving only the puncture guide wire in the blood vessel. In the process, use a scalpel to make a small opening at the skin exit of the puncture guide wire, and insert another vascular sheath along the puncture guide wire to complete the entire operation.

Beneficial effects of the present invention: the reverse blood vessel puncture device for intervention of the present invention includes a catheter, and a positioning channel and a puncture channel are arranged in parallel in the axial direction in the catheter, the outlet of the puncture channel is located on the side wall near the front end of the catheter, and the puncture channel is near the tail. The end part is provided with a puncture needle holder in a manner that can reciprocate and slide axially along the puncture channel, and also includes a fixing member for fixing the puncture guidewire needle holder in the puncture channel. Compared with the traditional forward puncture method, the puncture device of the present invention is used to assist in vascular puncture, and reverse puncture can be performed on special blood vessels in the complex interventional treatment process. The technical difficulty of puncture, while reducing the patient's pain and economic burden, makes complex and difficult operations simple and easy.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a schematic structural view of a reverse blood vessel puncture device for intervention according to the present invention;

Fig. 2 is an enlarged view of part Q in Fig. 1;

Fig. 3 is A-A direction sectional view in Fig. 1 and Fig. 2;

Fig. 4 is an enlarged view of part P in Fig. 1 .

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings, as shown in the figure: the reverse blood vessel puncture device for intervention in this embodiment includes a catheter 1, and a positioning channel 2 and a puncture channel 3 are arranged in parallel in the catheter along the axial direction, and the positioning channel 2 The diameter a of the puncture channel 3 is 0.889 mm, which is used with the existing 0.035-inch guide wire. The diameter b of the puncture channel 3 is 0.4572 mm, which is used with the existing 0.018-inch guide wire. The outlet of the puncture channel 3 is located on the side close to the front end of the catheter. The wall, near the tail end of the puncture channel 3, is provided with a puncture guide wire holder in a manner that can reciprocate and slide axially along the puncture channel, and also includes a fixing member for fixing the puncture guide wire holder in the puncture channel. In this embodiment, a cavity 4 with a diameter larger than the diameter of the puncture channel is provided along the axial direction of the puncture needle near the tail end in the puncture channel, and the length of the cavity is 3cm-6cm. The puncture guide wire holder is arranged in the cavity The hollow tube 7 in the cavity 4, the side wall of the hollow tube is radially provided with a fastening screw 6 for fastening the puncture needle; after the guide wire puncture needle passes through the hollow tube 7, the puncture guide can be tightened by tightening the screw 6. The silk needle is pressed and fixed, and the position corresponding to the cavity 4 is set on the side wall of the catheter 1. A strip-shaped hole is provided for the fastening screw 6 to reciprocate and slide along the catheter axial direction. The length of the strip-shaped hole is also 3cm-6cm. The strip hole, the positioning channel 2 and the puncture channel 3 are on the same plane, and the fastening screw 6 is threaded through the strip hole and arranged on the side wall of the hollow tube; during operation, the screw can be pushed to further make the The puncture guide wire holder slides back and forth to realize the puncture guide wire moving in the puncture channel; the fixer is a compression nut 5 sleeved on the fastening screw 6 and whose outer diameter is larger than the width of the strip hole. The fixing of the screw 6 can be easily realized by adjusting the nut 5 , thereby realizing the fixing of the puncture guide wire holder in the cavity 4 .

Compared with the traditional forward puncture method, the puncture device of the present invention is used to assist in vascular puncture, and reverse puncture can be performed on special blood vessels in the complex interventional treatment process. The technical difficulty of puncture, while reducing the patient's pain and economic burden, makes complex and difficult operations simple and easy.

As a further improvement of the above technical solution, the front end 31 of the puncture channel 3 is a circular arc transition. It makes the puncture guide wire needle go out more smoothly, ensures the continuity of the operation, is convenient to use, and saves operation time.

As a further improvement of the above technical solution, the through hole 71 in the hollow tube 7 is a square hole. The use of a square hole can ensure surface contact between the end of the screw and the inner wall of the hollow tube, which is more conducive to clamping the puncture guide wire.

As a further improvement of the above technical solution, the front end of the pipe wall of the conduit 1 is provided with a chamfer β. Setting the chamfer is conducive to the smooth entry of the catheter into the body to reach the site to be punctured, improving the efficiency of the operation.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (6)

1. the reverse vessel puncturer of intervention, it is characterized in that: comprise conduit (1), in conduit, be set up in parallel vertically placed channel (2) and puncture channel (3), the outlet of puncture channel (3) is positioned at the sidewall near catheter proximal end, position near tail end in puncture channel (3) is provided with puncture seal wire needle lock in the mode that can slide along puncture channel axial reciprocating, also comprises for puncture seal wire needle lock is fixed on to the fixture in puncture channel; Position near tail end in described puncture channel axially arranges along puncture needle the cavity (4) that diameter is greater than puncture channel diameter, described puncture seal wire needle lock is for to be arranged on the hollow pipe (7) in cavity (4), and hollow pipe sidewall is disposed radially the trip bolt (6) for fastening puncture needle; On the sidewall of conduit (1), the position corresponding with cavity (4) arranges the bar hole sliding along conduit axial reciprocating for trip bolt (6), at grade, trip bolt (6) is arranged on hollow pipe sidewall through bar hole in the mode being threaded for described bar hole, placed channel (2) and puncture channel (3); Described fixture is for being set on trip bolt (6) and external diameter is greater than the clamping nut (5) of bar hole width.

2. the reverse vessel puncturer of intervention according to claim 1, is characterized in that: the front end (31) of described puncture channel (3) is arc section transition.

3. the reverse vessel puncturer of intervention according to claim 1, is characterized in that: the through hole (71) in described hollow pipe (7) is square opening.

4. the reverse vessel puncturer of intervention according to claim 1, is characterized in that: the tube wall front end of described conduit (1) arranges undercut ss.

5. the reverse vessel puncturer of intervention according to claim 1, is characterized in that: the diameter a of described placed channel (2) is 0.889mm.

6. the reverse vessel puncturer of intervention according to claim 1, is characterized in that: the diameter b of described puncture channel (3) is 0.4572mm.