Tearable puncture needle and handle applied by same

Abstract

The tearable puncture needle comprises a needle tube, the tail end of the needle tube is provided with a horn mouth, the horn mouth is connected with a tail tube, the diameter of the tail tube is larger than that of the needle tube, the tail tube is provided with at least one opening in the axial direction, the puncture needle is integrally formed, and the diameter of the tail tube is larger than that of the needle tube. The handle comprises two handheld parts and a fixing sleeve, each handheld part is of a parallelogram structure and is fixed to the outer wall of the fixing sleeve, the upper end face of each handheld part is a first inclined face inclining upwards, the lower end face of each handheld part is a second inclined face inclining upwards, and the two handheld parts are symmetrically arranged in the axial direction; the handle imitates the design of butterfly wings and is more in line with the ergonomic principle, so that an operator can better master and use the puncture needle, the operator feels more comfortable when using the puncture needle for a long time, and hand fatigue and discomfort are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a tearable puncture needle and a handle used therein. Background Art

[0002] The safety of surgical instruments is one of the key factors for the success of the operation. The handle of the puncture needle is the gripping part of the puncture needle to enhance grip stability, smooth passage, and ensure the safety of medical staff during operation. As an important part of surgical instruments, the design of the puncture needle handle is crucial to improving surgical safety. At present, the conventional puncture needle handle has an unsmooth passage, which leads to the problem of catheter jamming and blocking when passing through the puncture needle handle and the handle is not firm. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a tearable puncture needle, including a needle tube, wherein the tail end of the needle tube is provided with a bell mouth, the bell mouth is connected to the tail tube, and the tail tube is provided with at least one opening along the axial direction.

[0004] Preferably, the diameter of the tail tube is larger than the diameter of the needle tube.

[0005] A handle is applied to the tearable puncture needle.

[0006] Preferably, the handle comprises a hand-holding portion and a fixing sleeve, and the hand-holding portion is fixed to an outer wall of the fixing sleeve.

[0007] Preferably, two hand-held parts are symmetrically arranged along the axial direction.

[0008] Preferably, the hand-held portion has a parallelogram structure.

[0009] Preferably, the upper end surface and the lower end surface of the hand-held portion are both inclined surfaces inclined upward.

[0010] Preferably, a first through hole and a second through hole are provided inside the fixing sleeve from top to bottom, and the diameter of the first through hole is greater than the diameter of the second through hole.

[0011] Preferably: a boss is provided at the connection between the first through hole and the second through hole, and the boss is used in conjunction with the bell mouth.

[0012] Preferably, the handle is made of thermoplastic polymer.

[0013] Technical effects and advantages of the utility model:

[0014] 1. In the present invention, the diameter of the tail tube of the puncture needle is larger than the diameter of the needle tube, and the urinary catheter can more easily enter the needle tube from the tail tube.

[0015] 2. In the utility model, the handle is designed to imitate butterfly wings, which is more in line with ergonomic principles, so that the operator can better grasp and use it, so that the operator can be more comfortable when using the puncture needle for a long time, reducing hand fatigue and discomfort.

[0016] 3. In the present invention, the plastic injection molding process fixes the puncture needle and the handle, which can provide a good grip, improve the strength and anti-slip properties of the handle, and effectively avoid the problem of hand slipping or displacement during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the connection between the tearable puncture needle and the handle provided in an embodiment of the present application;

[0018] Figure 2 is a schematic structural diagram of a tearable puncture needle provided in an embodiment of the present application;

[0019] Figure 3 It is a cross-sectional view of the handle of the tearable puncture needle provided in the embodiment of the present application.

[0020] In the figure: 1, needle tube; 11, bell mouth; 12, tail tube; 121, opening; 2, handle; 21, hand-holding part; 211, first inclined surface; 212, second inclined surface; 22, fixing sleeve; 221, first through hole; 222, second through hole; 223, boss. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0022] See also Figure 1 and 2 In this embodiment, a tearable puncture needle is provided, including a needle tube 1, a bell mouth 11 is provided at the tail end of the needle tube 1, the bell mouth 11 is connected to a tail tube 12, the diameter of the tail tube 12 is larger than the diameter of the needle tube 1, and the tail tube 12 is provided with at least one opening 121 along the axial direction.

[0023] Specifically, the puncture needle is integrally formed, the diameter of the tail tube 12 is larger than the diameter of the needle tube 1 , and the urinary catheter can more easily enter the needle tube 1 from the tail tube 12 .

[0024] See also Figure 1 and 3As shown, in this embodiment, a handle for the above-mentioned tearable puncture needle is also provided, and the handle 2 includes a hand-held portion 21 and a fixed sleeve 22. The hand-held portion 21 is a parallelogram structure, and the hand-held portion 21 is fixed to the outer wall of the fixed sleeve 22. The upper end surface of the hand-held portion 21 is a first inclined surface 211 inclined upward, and the lower end surface of the hand-held portion 21 is a second inclined surface 212 inclined upward. The hand-held portion 21 is symmetrically arranged with two portions along the axial direction.

[0025] When in use, the operator's thumb presses on the first inclined surface 211, the index finger presses against the outer edge of the second inclined surface 212, the middle finger and the ring finger clamp the inner edges of the two second inclined surfaces 212, and the handle 2 is tightly grasped. The handle 2 is designed to imitate butterfly wings, which is more ergonomic, so that the operator can better grasp and use it, so that the operator can be more comfortable when using the puncture needle for a long time, reducing hand fatigue and discomfort.

[0026] It is understandable that in order to improve the friction and holding stability of the handle 2, protrusions or textures can be added to the handle 2, and the length and width of the handle 2 can also be adjusted to meet the needs of operators with different palm sizes.

[0027] Furthermore, a first through hole 221 and a second through hole 222 are provided inside the fixing sleeve 22 from top to bottom, the diameter of the first through hole 221 is larger than the diameter of the second through hole 222, the first through hole 221 is used in conjunction with the tail pipe 12, and the second through hole 222 is used in conjunction with the needle tube 1, and a boss 223 is provided at the connection between the first through hole 221 and the second through hole 222, and the boss 223 is used in conjunction with the bell mouth 11.

[0028] Specifically, the puncture needle is inserted into the fixing sleeve 22 from the first through hole 221. When the outer wall at the bell mouth 11 contacts the boss 223, the puncture needle stops. At this time, the tail tube 12 is located inside the first through hole 221. The boss 223 is used to limit the puncture needle axially, and then the handle 2 and the puncture needle are connected together through the overmolding process, so that the handle 2 and the puncture needle are fixed more firmly and are safer to use.

[0029] Furthermore, the handle 2 is made of a thermoplastic polymer, which is a synthetic plastic formed by polymerization of propylene monomers. It is a common plastic material with light weight, high strength, chemical stability, impact resistance and good electrical insulation properties.

[0030] The use of high-quality plastic materials and overmolding technology can provide a good grip, improve the strength and anti-slip properties of the handle 2, and effectively avoid the problem of hand slipping or displacement during operation.

[0031] It can be understood that in some embodiments, the handle 2 can also be a structure of two sets of hand-held parts 21 and fixed sleeves 22. The two fixed sleeves 22 are hollow semi-cylindrical. The two fixed sleeves 22 are connected, and the puncture needle is inserted between the two fixed sleeves 22, and then fixed together by injection molding.

[0032] In some embodiments, only a bell mouth 11 is provided at the end of the needle tube 1, and the bell mouth 11 cooperates with the boss 223 to limit the axial position of the needle tube 1 to prevent the needle tube 1 from falling off the fixed sleeve 22, and there is no tail tube 12 inside the fixed sleeve 22, which is convenient for the passage of the catheter.

[0033] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A tearable puncture needle, comprising a needle tube (1), characterized in that: The tail end of the needle tube (1) is provided with a bell mouth (11), the bell mouth (11) is connected to a tail pipe (12), and the tail pipe (12) is provided with at least one opening (121) along the axial direction; The diameter of the tail tube (12) is greater than the diameter of the needle tube (1).

2. A handle, characterized in that: Applicable to the tearable puncture needle described in claim 1.

3. The handle according to claim 2, characterized in that: The handle (2) comprises a hand-holding portion (21) and a fixing sleeve (22), wherein the hand-holding portion (21) is fixed to the outer wall of the fixing sleeve (22).

4. The handle according to claim 3, characterized in that: Two hand-held parts (21) are symmetrically arranged along the axial direction.

5. The handle according to claim 4, characterized in that: The hand-held portion (21) is in a parallelogram structure.

6. The handle according to claim 3, characterized in that: The upper end surface and the lower end surface of the hand-held portion (21) are both inclined surfaces inclined upward.

7. The handle according to claim 3, characterized in that: A first through hole (221) and a second through hole (222) are provided inside the fixing sleeve (22) from top to bottom, and the diameter of the first through hole (221) is greater than the diameter of the second through hole (222).

8. The handle according to claim 7, characterized in that: A boss (223) is provided at the connection between the first through hole (221) and the second through hole (222).

9. The handle according to claim 2, characterized in that: The handle (2) is made of thermoplastic polymer.

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