CN201061557Y

CN201061557Y - Modified type bidirectional pipe-displacing anesthesia spinal needle

Info

Publication number: CN201061557Y
Application number: CNU2007200805862U
Authority: CN
Inventors: 林雪梅; 周俊; 马玉姗; 吕胜
Original assignee: West China Second University Hospital of Sichuan University
Current assignee: West China Second University Hospital of Sichuan University
Priority date: 2007-08-08
Filing date: 2007-08-08
Publication date: 2008-05-21
Anticipated expiration: 2017-08-08

Abstract

Provided is a modified two-way pipe epidural puncture needle, which comprises an epidural puncture needle and a needle core. The epidural puncture needle is a hollow needle body, the cross-section of the hollow needle body is an elliptical ring surface, and the needle-point part section is two pieces of corner-shaped sheets, the apical angle of each corner-shaped sheet is formed a needle point, the distance between two needle points is smaller than the external diameter of the epidural tube disposed inside, and the sidelines on the same side of the apical angles of two corner-shaped sheets are surrounded to be a hole of similar elliptical shape, the needle core is a solid needle body, the cross section of the solid needle body is of elliptical shape and matches with the inner chamber of the hollow needle body of the epidural puncture needle, and the needle point part section of the needle core is a horn-shaped body the shape and the size of which match with the needle point part section of the epidural puncture needle. The two-way pipe epidural puncture needle can achieve two-way pipe via one time puncture, the structure is simple, and the utilization is convenient and safe.

Description

The two-way pipe anesthesia spinal needle of putting of modified model

Technical field

This utility model belongs to the clinical anesthesia anesthesia spinal needle, the particularly a kind of anesthesia spinal needle that can two-wayly put pipe.

Background technology

In the clinical anesthesia, epidural block is a kind of anesthesia commonly used, and wherein unidirectional epidural block is used more extensive; But, then select the two-way epidural block or the general anesthesia of 2 punctures for the operation that some plane requires extensively, opereating specification is bigger.Chinese patent ZL 90210551.5 provides a kind of diplopore the two-way pipe anesthesia spinal needle of putting, form by lining pin, two-way anesthesia spinal needle and three kinds of needle bodies of guide pin, the cross section of lining pin needle body is oval, the cross section, pin chamber of two-way anesthesia spinal needle also is oval, at its spoonful shape needle point back side one oval aperture is arranged, guide pin pin chamber is circular, and the pin hole on its spoonful shape needle point is corresponding with the oval aperture at the needle point back side of two-way anesthesia spinal needle.Put the pipe anesthesia spinal needle two-way pipe of putting of can realizing a bit puncturing though this kind diplopore is two-way, reduce point of puncture and tissue injury, its structure and operation are comparatively complicated.When having the anesthesia spinal needle arrival epidural space that serves as a contrast pin, need to take out the lining pin, after in anesthesia spinal needle, inserting guide pin, again thin epidural catheter is inserted epidural space by guide pin, withdraw from guide pin thereupon, in two-way puncture needle, insert thick epidural catheter on thin epidural catheter side, withdraw from anesthesia spinal needle then.In withdrawing from the process of guide pin, fine duct exists the danger of easily withdrawing from and be breaking at epidural space with guide pin.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of simple in structure, two-way pipe anesthesia spinal needle of putting of the convenient safe modified model of use is provided.

The two-way pipe anesthesia spinal needle of putting of modified model described in the utility model is made up of anesthesia spinal needle and nook closing member; Anesthesia spinal needle is hollow needle body, the cross section of described hollow needle body is oval anchor ring, the needle tip section is that (described angle piece is to intersect the cambered surface that straight line surrounds by two to two angle pieces, two collinear intersections are defined as the drift angle of angle piece, two intersect the angle that collinear angle is defined as angle piece), the drift angle of each angle piece forms needle point, and the spacing between two needle points is less than the external diameter of the epidural catheter of inserting, and the sideline of described two angle piece drift angle homonymies surrounds similar oval-shaped hole; Nook closing member is solid needle body, and the cross section of described solid needle body is oval, is complementary the horn shape body that the shape and size of the needle tip Duan Weiyu anesthesia spinal needle needle tip section of nook closing member are complementary with the inner chamber of the hollow needle body of anesthesia spinal needle.

The angle of two angle pieces of formation anesthesia spinal needle needle tip section is identical, is advisable with 60 °～75 °.

The two-way using method of putting the pipe anesthesia spinal needle of modified model described in the utility model: in the clinical manipulation, the intermediary intervertebral space of selecting 2 punctures is as the epidural puncture pin mark, earlier nook closing member is inserted anesthesia spinal needle, after anesthesia spinal needle enters epidural space, withdraw from nook closing member, respectively two epidural catheters are inserted epidural space by similar oval-shaped hole, anesthesia spinal needle needle tip section both sides, withdraw from anesthesia spinal needle after the degree of depth that insertion needs.Regulate the length of epidural catheter in epidural space, the reuse immobilization with adhesive tape.

The two-way pipe anesthesia spinal needle of putting of modified model described in the utility model has following beneficial effect:

1, only form by anesthesia spinal needle and nook closing member, thus simple in structure.

2, can realize the two-way pipe of putting by one-time puncture, enlarge the retardance scope, reduce the risk of epidural puncture complication.

Simple to operate, safety when 3, using.

Description of drawings

Fig. 1 is the structure chart of anesthesia spinal needle;

Fig. 2 is the E-E profile of Fig. 1;

Fig. 3 is the vertical view of Fig. 1;

Fig. 4 is the structure chart of nook closing member;

Fig. 5 is the F-F profile of Fig. 4;

Fig. 6 is 4 vertical view;

Fig. 7 is the enlarged diagram of the A of anesthesia spinal needle needle tip section to view;

Fig. 8 is the constitutional diagram of anesthesia spinal needle and nook closing member.

Among the figure, the needle tip section of the needle tip section of 1-anesthesia spinal needle, 2-anesthesia spinal needle, 3-nook closing member, 4-nook closing member.

The specific embodiment

The two-way pipe anesthesia spinal needle of putting of modified model in the present embodiment is made up of anesthesia spinal needle 1 and nook closing member 3, and during puncture, nook closing member 3 inserts anesthesia spinal needle 1, and compound mode as shown in Figure 8.

The shape of anesthesia spinal needle 1 and structure are as Fig. 1, shown in Figure 3, its needle body is hollow needle body, the cross section of described hollow needle body is oval anchor ring (as shown in Figure 2), its needle tip section 2 is two angle pieces, the angle of each angle piece is 60 °, and the drift angle of each angle piece forms needle point, and the spacing between two needle point C, the D is less than the external diameter of the epidural catheter of inserting, the sideline of two angle piece drift angle homonymies surrounds similar oval-shaped hole, as Fig. 3, shown in Figure 7.

The shape of nook closing member 3 and structure are as Fig. 4, shown in Figure 6, its needle body is solid needle body, the cross section of described solid needle body is oval (as shown in Figure 5), be complementary with the shape and size of anesthesia spinal needle hollow needle intracoelomic cavity, the shape of needle tip section 4 also is complementary with the shape of anesthesia spinal needle needle tip section 2, be the horn shape body, the angle of horn shape body is 60 °, and the sideline of horn shape body drift angle homonymy surrounds similar oval-shaped (as shown in Figure 6).

Claims

1. two-way pipe anesthesia spinal needle of putting of modified model, form by anesthesia spinal needle (1) and nook closing member (3), anesthesia spinal needle (1) is hollow needle body, the cross section of described hollow needle body is oval anchor ring, nook closing member (3) is solid needle body, the cross section of described solid needle body is oval, be complementary with the inner chamber of the hollow needle body of anesthesia spinal needle, the needle tip section (2) that it is characterized in that anesthesia spinal needle (1) is two angle pieces, the drift angle of each angle piece forms needle point, spacing between two needle points is less than the external diameter of the epidural catheter of inserting, and the sideline of described two angle piece drift angle homonymies surrounds similar oval-shaped hole; The horn shape body that the needle tip section (4) of nook closing member (3) is complementary for the shape and size with anesthesia spinal needle needle tip section.

2. the two-way pipe anesthesia spinal needle of putting of modified model according to claim 1, the angle of two angle pieces that it is characterized in that forming the needle tip section (2) of anesthesia spinal needle (1) is 60 °～75 °.