CN211749570U

CN211749570U - Artery intubation guide device for small animal experiments

Info

Publication number: CN211749570U
Application number: CN202020106488.7U
Authority: CN
Inventors: 金会艳; 边慧
Original assignee: Kunming Medical University
Current assignee: Kunming Medical University
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-10-27
Anticipated expiration: 2030-01-17

Abstract

The utility model discloses an artery intubate guiding device for toy experiments, including handheld end (1), the syringe needle (2) of the thin cone form of handheld end (1) end-to-end connection cavity is equipped with spout (21) and slider structure (22) in syringe needle (2) outside, and slider structure (22) are connected with nook closing member (3) in syringe needle (2), slider structure (22) drive nook closing member (3) stretch out outside syringe needle (2) or in withdrawal syringe needle (2), the device simple structure, the operation of being convenient for, and do not harm the blood vessel, be applicable to various similar animal artery intubate art.

Description

Artery intubation guide device for small animal experiments

Technical Field

The utility model relates to a medical treatment experimental facilities technical field especially relates to an artery intubate guiding device for toy experiments for the experimental auxiliary device of guide intubate when the toy carries out artery intubate.

Background

Arterial catheterization is a common experimental technique, and when blood pressure is measured directly or a sample of arterial blood is collected for analysis of relevant indexes, an incision is cut in the arterial blood vessel, and then the catheter is inserted. After the incision is cut on the artery blood vessel of the small animal, the incision is not easy to find due to blood loss of the cannula section, blood vessel collapse and the like. And the diameter of the artery is gradually reduced along with the reduction of the experimental animal individuals, and the operation difficulty of the artery intubation is gradually increased.

At present, when small animal artery intubation is carried out, a common method is to use an ophthalmologic forceps to assist in lifting the upper edge of a blood vessel incision and then carry out intubation. But to the rabbit femoral artery that the vessel pipe diameter is thinner, even the artery of individual little experimental animals, after cutting the vascular wall, because the incision is difficult to find, consequently it is also big to use the auxiliary operation degree of difficulty that ophthalmic tweezers lifted the incision upper edge. When the operation is improper, the experimental animal in the intubation can bleed greatly, even be life-threatening, and the experiment fails.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems and deficiencies of the prior art, the utility model provides an artery intubation guide device for small animal experiments.

The following design structure and design scheme are specifically adopted:

the utility model provides an artery intubate guiding device for toy experiments, includes handheld end (1), the syringe needle (2) of the thin cone form of handheld end (1) end-to-end connection cavity, be equipped with spout (21) and slider structure (22) in syringe needle (2) outside, and slider structure (22) are connected with nook closing member (3) in syringe needle (2), and slider structure (22) slide in spout (21), drive nook closing member (3) from this and stretch out outside syringe needle (2) or retract in syringe needle (2).

Preferably, the handheld end (1) is composed of a conical needle handle (11) and a cylindrical guide needle body (12).

Preferably, the handheld end (1) and the needle (2) are connected in a hinged mode through rotation, and the needle (2) is detachable.

The working principle of the utility model is introduced as follows:

the utility model discloses a cylindric guide needle body (12) is connected to awl form needle handle (11) as handheld end (1), syringe needle (2) of the thin cone form of cavity in handheld end (1) end-to-end connection, be equipped with spout (21) and slider structure (22) outside syringe needle (2), and slider structure (22) are connected with nook closing member (3) in syringe needle (2), slider structure (22) slides in spout (21), it stretches out outside syringe needle (2) to drive nook closing member (3), puncture vascular wall (4) with nook closing member (3), slide slider structure (22) again and drive nook closing member (3) and withdraw in syringe needle (2), syringe needle (2) are drawn into along vascular wall (4) inner wall and are enlarged puncture opening; the handheld end (1) is connected with the needle head (2) in a hinged mode through rotation, the angle between the guide needle body (12) and the needle head (2) can be adjusted during use, the puncture opening is convenient to lift, and the cannula is placed into a blood vessel cavity.

Compared with the prior art, the utility model produced beneficial effect is: the utility model discloses a set up spout and slider structure in the syringe needle outside, drive the nook closing member by slider structure and stretch out or retract, remove the operation of cutting the mouth from on the artery, directly puncture the blood vessel, can not harm the blood vessel, through syringe needle expansion puncture mouth to adopt between syringe needle and the handheld end can angle of adjustment articulated, be convenient for mention the puncture mouth, make easy operation change, improve intubate efficiency and success rate, and the device simple structure, it is with low costs, be applicable to the great arteriole intubate art of the degree of difficulty.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the needle of the present invention;

FIG. 3 is a cross-sectional view of the overall structure of the present invention;

FIG. 4 is a diagram illustrating the usage of the present invention;

FIG. 5 is a view showing a usage state of the present invention;

reference numerals: 1-handheld end; 11-needle handle; 12-a guide needle body; 2-a needle head; 21-a chute; 22 — a slider structure; 3, a needle core; 4-vessel wall.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in the accompanying drawings 1-3, an artery intubation guide device for small animal experiments comprises a handheld end 1, wherein the tail end of the handheld end 1 is connected with a hollow thin cone-shaped needle head 2, a sliding groove 21 and a sliding block structure 22 are arranged on the outer side of the needle head 2, the sliding block structure 22 is connected with a needle core 3 in the needle head 2, and the sliding block structure 22 slides in the sliding groove 21, so that the needle core 3 is driven to extend out of the needle head 2 to puncture the blood vessel wall 4; or the needle core 3 is driven to retract into the needle head 2, and the tip end of the needle head enters the inner wall of the blood vessel wall 4 to expand the puncture hole.

Further, the handheld end 1 is composed of a conical needle handle 11 and a cylindrical guide needle body 12, and a needle head 2 is connected to the tail end of the guide needle body 12.

Further, the handheld end 1 and the needle head 2 are connected in a hinged mode through rotation, so that the puncture opening is convenient to lift, and the needle head 2 can be detached, so that the needle head 2 is convenient to replace.

Examples

During operation, an operator firstly anaesthetizes a small animal, then fixes the anaesthetized small animal in a supine position on an operating table, cuts hair and makes skin incision on the small animal, separates subcutaneous tissue and muscle layer, finally dissociates an arterial blood vessel needing to be intubated, and passes through two silk threads under the blood vessel for standby, one thread is used for ligating the distal end of the artery, the other thread is used for fixing the intubation tube, and clamps the blood vessel at the proximal end of the arterial blood vessel by using a small artery clamp to block blood flow, the position close to the distal end is selected as the intubation tube position, the operator replaces a proper needle head 2 according to the thickness of the arterial blood vessel, after the needle head 2 is installed, the operator holds a needle handle 11 with hands, as shown in the specification attached figure 4, the slide block structure 22 extends a needle core 3 out of the needle head 2 to puncture the blood vessel wall 4, then the slide block structure 22 retracts the needle core 3 into the needle head 2, as shown in the specification, with 2 most advanced slips into in order to enlarge the puncture to the intracavity along 4 inner walls of vascular wall of syringe needle, then hand 11 powers of needle handle, through guide needle body 12 transmission strength, make and form certain angle between syringe needle 2 and the guide needle body 12, mention the puncture, so that the puncture enlarges, easily put into vascular wall 4 to the intubate, the intubate inserts behind the vascular chamber, operating personnel again through hand 11 powers of needle handle, guide needle body 12 transmission strength, make syringe needle 2 withdraw from the vascular chamber, at last with the firm fixed intubate of ready silk thread.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. The utility model provides an artery intubate guiding device for small animal experiments, includes handheld end (1), its characterized in that: the tail end of the handheld end (1) is connected with a hollow thin cone-shaped needle head (2), a sliding groove (21) and a sliding block structure (22) are arranged on the outer side of the needle head (2), the sliding block structure (22) is connected with a needle core (3) in the needle head (2), and the sliding block structure (22) slides in the sliding groove (21), so that the needle core (3) is driven to extend out of the needle head (2) or retract into the needle head (2).

2. The small animal experimental artery cannula guiding device as claimed in claim 1, wherein: the handheld end (1) is formed by connecting a conical needle handle (11) with a large outer part and a small inner part and a cylindrical guide needle body (12).

3. The small animal experimental artery cannula guiding device as claimed in claim 2, wherein: the handheld end (1) is connected with the needle head (2) in a hinged mode through rotation, and the needle head (2) can be detached.