Long and thin trocar

Abstract

The utility model discloses a slender trocar which comprises a needle tube fixing seat, a catheter fixing seat, a catheter and a needle core, the needle core is fixedly arranged on the needle tube fixing seat, the catheter fixing seat is fixedly connected with the catheter, the catheter is sleeved on the needle core, and a clamping piece is further movably arranged on the catheter. According to the utility model, the clamping piece is arranged, so that the slender trocar with weaker deflection can be held by sections, and the rigidity of the slender trocar is enhanced when the slender trocar is soft and easy to bend; the first clamping part, the second clamping part and the supporting part are arranged on the clamping piece, so that the clamping piece can adapt to trocar with different specifications, the application range is wide, an operator can easily pinch up the trocar, and the working efficiency is improved; the device is simple in structure, low in manufacturing cost and low in use cost.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a long and thin trocar. Background Art

[0002] Long and thin trocars are used to penetrate the human body for infusion when treating patients. However, some organs of the human body are relatively fragile, and rigid needles cannot be directly left in the body for a long time. For example, during heart surgery, in order to supply fluids to some organs in the body, a trocar is used. The basic structure of the trocar consists of a rigid needle core with a soft cannula on the outer sleeve of the needle core. After the needle core drives the cannula to pierce the human tissue, the needle core is pulled out, thereby leaving the cannula in the human tissue. However, the deflection of the long and thin trocar is too weak, and the operator needs to pinch the front end of the trocar with his fingers when using it. Since the trocar is relatively thin, it is difficult for the operator to operate it accurately while wearing gloves, which affects the accuracy of the operation and may even cause medical accidents. Utility Model Content

[0003] The purpose of the utility model is to provide a long and thin trocar to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a long and thin trocar, comprising a needle tube fixing seat, a catheter fixing seat, a catheter and a needle core, the needle core is fixedly arranged on the needle tube fixing seat, the catheter fixing seat is fixedly connected to the catheter, the catheter is sleeved on the needle core, and the catheter is also movably provided with a clamping member.

[0005] Preferably, the clamping member comprises a first clamping portion and a second clamping portion, and a hinge point is provided between the first clamping portion and the second clamping portion.

[0006] Preferably, a support portion is provided at one end of the first clamping portion away from the hinge point, a support step is provided on the inner side of the support portion, and a pipe penetration opening is provided on one side of the support portion close to the first clamping portion.

[0007] Preferably, a first boss is disposed on the lower end surface of the first clamping portion, and a second boss is disposed on the upper end surface of the second clamping portion, and the first boss and the second boss are arranged alternately.

[0008] Preferably, an end portion of the second clamping portion away from the hinge point is provided with an upward slope, and a lower end surface of the second clamping portion is provided with a hand-holding portion.

[0009] Preferably, the upper end surface of the first clamping portion is provided with anti-slip grooves.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a clamping member so that a long and thin trocar with weak deflection can be held in sections, thereby enhancing the rigidity of the long and thin trocar which is soft and easy to bend; by providing a first clamping part, a second clamping part and a supporting part on the clamping member, the clamping member can adapt to trocars of different specifications, has a wide range of applications, makes it easy for operators to pick up the trocar, and improves work efficiency; the utility model has a simple structure, low cost, and low use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the structure of the clamping member of the utility model.

[0013] In the figure: 1. needle tube fixing seat; 2. catheter fixing seat; 3. catheter; 4. clamping member; 41. first clamping part; 42. second clamping part; 43. hinge point; 44. support part; 45. support step; 46. tube insertion opening; 47. first boss; 48. second boss; 49. hand-held part; 5. needle core. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] See also Figure 1-2 The utility model provides a technical solution: a long and thin trocar, comprising a needle tube fixing seat 1, a catheter fixing seat 2, a catheter 3 and a needle core 5, the needle core 5 is fixedly arranged on the needle tube fixing seat 1, the catheter fixing seat 2 is fixedly connected to the catheter 3, the catheter 3 is sleeved on the needle core 5, and a clamping member 4 is also movably provided on the catheter 3.

[0016] Specifically, the clamping member 4 includes a first clamping portion 41 and a second clamping portion 42, and a hinge point 43 is provided between the first clamping portion 41 and the second clamping portion 42. Since the clamping member 4 is made of plastic material, the hinge point 43 is elastic, and a gap is left next to the hinge point 43 for the trocar to pass through the side gap.

[0017] Specifically, a support portion 44 is provided at one end of the first clamping portion 41 away from the hinge point 43, a serrated support step 45 is provided on the inner side of the support portion 44, a tube-through opening 46 is provided on one side of the support portion 44 close to the first clamping portion 41, one end of the second clamping portion 42 is in contact with the support step 45, and the support step 45 is provided in several layers. When the second clamping portion 42 abuts against the support steps 45 of different layers, the clamping force of the trocar can be adjusted, and it can also adapt to trocars of different specifications.

[0018] Specifically, a first boss 47 is provided on the lower end surface of the first clamping portion 41, and a second boss 48 is provided on the upper end surface of the second clamping portion 42. The first boss 47 and the second boss 48 are alternately arranged, and the trocar passes through between the second boss 48 and the first clamping portion 41. Due to the characteristics of the plastic material, the trocar can be prevented from sliding.

[0019] Specifically, an upward slope is provided at one end of the second clamping portion 42 away from the hinge point 43, so that the second clamping portion 42 can contact the support step 45 more stably, and a handle 49 is provided on the lower end surface of the second clamping portion 42, which is convenient for the operator to place his fingers here to open and close the clamp 4.

[0020] Specifically, the upper end surface of the first clamping portion 41 is provided with anti-slip grooves, so that the thumb will not slide when placed on it during operation.

[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A long and thin trocar, comprising a needle tube fixing seat (1), a catheter fixing seat (2), a catheter (3) and a needle core (5), wherein the needle core (5) is fixedly arranged on the needle tube fixing seat (1), the catheter fixing seat (2) is fixedly connected to the catheter (3), and the catheter (3) is sleeved on the needle core (5), characterized in that: The conduit (3) is also movably provided with a clamping member (4).

2. A long and thin trocar according to claim 1, characterized in that: The clamping member (4) comprises a first clamping portion (41) and a second clamping portion (42), and a hinge point (43) is provided between the first clamping portion (41) and the second clamping portion (42).

3. A long and thin trocar according to claim 2, characterized in that: A support portion (44) is provided at one end of the first clamping portion (41) away from the hinge point (43), a support step (45) is provided on the inner side of the support portion (44), and a pipe-through opening (46) is provided on one side of the support portion (44) close to the first clamping portion (41).

4. A long and thin trocar according to claim 3, characterized in that: The lower end surface of the first clamping portion (41) is provided with a first boss (47), and the upper end surface of the second clamping portion (42) is provided with a second boss (48), and the first boss (47) and the second boss (48) are arranged alternately.

5. A long and thin trocar according to claim 4, characterized in that: An end portion of the second clamping portion (42) away from the hinge point (43) is provided with an upward slope, and a hand-holding portion (49) is provided on the lower end surface of the second clamping portion (42).

6. A long and thin trocar according to claim 5, characterized in that: The upper end surface of the first clamping portion (41) is provided with anti-slip grooves.

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