Medical catheter incision knife

Abstract

The utility model discloses a medical catheter incision knife which comprises a shell, a knife handle and a knife handle. One end of the pressing block is rotationally connected with a guide column on the inner wall of the shell, and the other end of the pressing block rotationally and upwards penetrates through the notch to form a pressing block matching surface; the tool apron penetrates through the notch and is connected with the shell, the end, close to the pressing block, of the tool apron is sharp, a blade corresponding to the matching face of the pressing block is arranged at the lower end of the tool apron, and a wire groove is formed in the upper end of the tool apron and inclines downwards; the button penetrates through the shell, is in sliding connection with a supporting plate in the shell and is elastically connected with the shell through a spring arranged in the shell, and the button is connected with a button pressing plate extending to the position above the wire groove. The utility model provides a medical catheter incision knife which can be used for splitting a medical catheter to separate the medical catheter from a lead while the medical catheter is pulled out of a body, and ensuring the stability of the lead, so that the medical catheter can be quickly taken out of the body of a patient.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, and more specifically, to a medical catheter cutter. Background Art

[0002] Medical catheters have a certain strength and are often used in the treatment process to build pathways for subsequent devices in the human body and to deliver medical devices through their internal pathways. After the medical catheter completes its role as a pathway, it needs to be removed from the human body, but in many cases, the medical devices delivered inside the medical catheter need to remain in the body, which requires that while the medical catheter is removed from the human body, the medical catheter and the medical devices inside it must also be separated. For example, when a pacemaker is in use, the pacemaker electrode needs to be inserted into the heart of the patient. The pacemaker electrode is connected to the pacemaker through an electrode wire. The electrode wire is soft in texture. In order to facilitate the delivery of the electrode wire to the patient's heart, a medical catheter will be set in the human body first. The electrode wire passes through the medical catheter to deliver its electrode to the patient's heart. Finally, the electrode wire remains in the patient's body. In the later stage, the medical catheter needs to be safely withdrawn from the patient's body under the premise of keeping the electrode wire immobile.

[0003] At present, the main method to solve the above problem is to set a cutting knife, and cut the medical catheter open by the cutting knife while pulling the medical catheter out of the body, so as to separate the pulled medical catheter from the electrode wire and prevent the electrode wire from moving together. Since the movement trajectory of the medical catheter is not stable during the pulling process, the cutting direction of the cutting knife is difficult to control, and the electrode wire must be prevented from moving during the pulling process, the medical catheter can only be pulled slowly. The overall operation has high requirements on the operator, is time-consuming, and has a low one-time cutting completion rate. Utility Model Content

[0004] The utility model aims to provide a medical catheter cutter, which can cut open the medical catheter while pulling it out of the body, separate it from the wire, and ensure the stability of the wire, so as to quickly take the medical catheter out of the patient's body.

[0005] The utility model solves the above technical problems with the following technical solutions: a medical catheter cutting knife, comprising:

[0006] A housing having a notch at an upper end thereof;

[0007] A pressing block, one end of which is rotatably connected to a guide post on the inner wall of the housing, and the other end of which can be rotatably passed upward through the notch to form a pressing block mating surface;

[0008] A tool holder that penetrates through the notch and is connected to the housing. One end of the tool holder near the pressing block is pointed, and a blade corresponding to the mating surface of the pressing block is provided at its lower end. A wire groove is provided at the upper end of the tool holder, and the wire groove slopes downward starting from one end near the pressing block;

[0009] A button that penetrates through the housing and is slidably connected to a support plate inside the housing, and is elastically connected to the housing through a spring provided inside the housing. A button pressing plate extending above the wire groove is connected to the button. When the button is driven to slide by an external force, the button can slide to drive the pressing block to rotate towards the blade, or drive the button pressing plate to seal or open the wire groove.

[0010] Further, in the medical catheter cutter, the button includes:

[0011] A button slide plate that slidably penetrates through the housing and is connected to the spring;

[0012] A button baffle that is provided at the upper end of the button slide plate, and a corresponding protrusion is provided on the pressing block;

[0013] A button connecting plate whose two ends are respectively connected to the button slide plate and the button pressing plate.

[0014] Further, in the medical catheter cutter, a limit plate corresponding to the button connecting plate is provided at the upper end of the housing.

[0015] Further, in the medical catheter cutter, a pressing plate is connected to one end of the button slide plate located outside the housing.

[0016] Further, in the medical catheter cutter, a tool groove corresponding to the blade is provided at the other end of the pressing block.

[0017] Further, in the medical catheter cutter, an elastic buffer is provided between the pressing block and the tool holder.

[0018] The beneficial effects of the present utility model are:

[0019] The medical catheter cutter of the present utility model integrates three functions of cutting, splitting, and clamping. On the premise of clamping the internal wire of the medical catheter, while pulling the medical catheter outwards, the medical catheter is cut to separate it from the wire, so that the medical catheter can be quickly removed from the patient's body, and the wire can be kept stable during the removal process.

[0020] Other advantages, objectives, and features of the present utility model will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the medical catheter cutter of the utility model;

[0022] Figure 2 It is a top view of the medical catheter cutting knife described in the utility model;

[0023] Figure 3 It is a structural schematic diagram of the upper end of the housing of the utility model;

[0024] Figure 4 This is a schematic diagram of the internal structure of the medical catheter cutter of the utility model;

[0025] Figure 5 It is a schematic diagram of the structure of the medical catheter cutting knife according to the utility model from another angle;

[0026] Figure 6 It is a structural schematic diagram of the knife holder described in the utility model;

[0027] Figure 7 The figure is a schematic diagram of the structure of the button described in the utility model.

[0028] Wherein, the reference numerals represent:

[0029] 1. Shell; 11. Limiting member; 2. Notch; 3. Pressing block; 31. Knife groove; 4. Knife seat; 41. Blade; 42. Wire groove; 5. Button; 51. Button pressure plate; 52. Button slide plate; 53. Button baffle; 54. Button connecting plate; 55. Pressing plate; 6. Spring; 7. Support plate; 8. Elastic buffer. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0031] It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] Figure 1-Figure 6 A medical catheter cutting knife provided in an embodiment of the utility model comprises:

[0033] A housing 1, with a notch 2 at its upper end;

[0034] A pressing block 3, one end of which is rotatably connected to a guide post on the inner wall of the housing 1, and the other end of which can be rotatably passed upward through the notch 2 to form a pressing block mating surface;

[0035] a knife seat 4, which penetrates the notch 2 and is connected to the housing 1, wherein the end of the knife seat 4 close to the pressing block 3 is pointed, and a blade 41 corresponding to the mating surface of the pressing block is provided at the lower end thereof, and a wire groove 42 is provided at the upper end of the knife seat 4, and the wire groove 42 is inclined downward from the end close to the pressing block 3;

[0036] The button 5 passes through the housing 1 and is slidably connected to the support plate 7 inside the housing 1, and is elastically connected to the housing 1 through a spring 6 arranged in the housing 1. The button 5 is connected to a button pressing plate 51 extending above the wire groove 42. When an external force drives the button 5 to slide, the button 5 can slide to drive the pressing block 3 to rotate toward the blade 41, or drive the button pressing plate 51 to seal or open the wire groove 42.

[0037] In this embodiment, the knife holder 4 is fixed on the housing 1, and the pointed part of the knife holder 4 forms a cutting position for cutting the medical catheter, and a scissor blade is formed between the blade 41 and the other end of the pressing block 3. A support plate 7 is arranged in the housing 1 to support the button 5 and ensure its stability during the sliding process. Without the action of external force, the spring 6 exerts an outward force on the button 5, so that the button 5 moves outward. At this time, the button 5 drives the button pressing plate 51 to move in the direction of the wire groove 42 until the button pressing plate 51 contacts the upper end of the knife holder 4, clamping the wire set in the wire groove 42. At this time, there is a gap between the pressing block 3 and the blade 41, and the pressing block 3 is placed in the notch 2 at the upper end of the housing 1. Under the action of external force, the button 5 slides inward until it contacts the pressing block 3, thereby driving the pressing block 3 to rotate around one end thereof, so that the other end of the pressing block 3 rotates toward the blade 41 until it contacts it, so that the things between the blade 41 and the pressing block 3 can be cut off. In this embodiment, when cutting the medical catheter, first, the end of the medical catheter is put on the pointed part of the knife seat 4, and then the button 5 is pressed inward to squeeze the spring 6, and an opening is cut at the end of the medical catheter by the scissor blades between the blade 41 and the pressing block 3. At this time, the button pressing plate 51 opens the wire groove 42, and the wire is placed in the wire groove 42. Then, the button 5 is released, and the spring 6 returns to its original state to drive the button pressing plate 51 to contact the upper end of the knife seat 4, so that the wire is fixed in the wire groove 42 through the button pressing plate 51. At this time, the pressing block 3 is away from the blade 41, and the housing 1 is held by hand, and then the medical catheter is pulled. During the movement of the medical catheter, the pointed part at one end of the knife seat 4 is cut open, and the wire is fixed. The medical catheter can be quickly separated from the wire, so that it is easy to remove it from the body, while ensuring the stability of the wire.

[0038] Preferably, as another embodiment of the present utility model, Figure 6 As shown, the button 5 includes:

[0039] A button slide plate 52, which slidably passes through the housing 1 and is connected to the spring 6;

[0040] A button baffle 53, which is arranged at the upper end of the button slide plate 52, and a corresponding protrusion is provided on the pressing block 3;

[0041] The button connecting plate 54 has two ends connected to the button sliding plate 52 and the button pressing plate 51 respectively.

[0042] In this embodiment, if Figure 7 As shown, the housing 1 is provided with a limiting hole matching the button slide 52, and the button slide 52 passes through the limiting hole. The moving track of the button slide 52 is limited by the limiting hole, and the support plate 7 supports the button slide 52 to ensure its stability during the sliding process. The button connecting plate 54 passes through the notch 2 and is connected to the button pressing plate 51. When the button slide 52 is driven to slide inward by external force, the button baffle 53 contacts the raised part on the pressing block 3 to drive the pressing block 3 to rotate, and the button connecting plate 54 drives the button pressing plate 51 away from the wire groove 42 to open the wire groove 42. After the external force is removed, the button slide 52 slides outward under the elastic force of the spring 6 until the button pressing plate 51 contacts the upper end of the knife seat 4 to seal the wire groove 42.

[0043] Preferably, as another embodiment of the present utility model, a limiting plate corresponding to the button connecting plate 54 is provided at the upper end of the housing 1 .

[0044] In this embodiment, a limiting plate is provided at the upper end of the housing 1 , and the moving track of the button connecting plate 54 is limited by the limiting plate to ensure the stability of the button 5 during movement.

[0045] Preferably, as another embodiment of the present invention, one end of the button slide plate 52 located outside the housing 1 is connected to a pressing plate 55 .

[0046] In this embodiment, a pressing plate 55 is provided on the button slide plate 52 to facilitate pressing the button slide plate 52 by hand.

[0047] Preferably, as another embodiment of the present invention, the other end of the pressing block 3 is provided with a blade groove corresponding to the blade 41 .

[0048] In this embodiment, a blade groove corresponding to the blade 41 is provided on the pressing block 3 to facilitate the shearing effect of the blade 41 at the scissor blade.

[0049] Preferably, as another embodiment of the present utility model, an elastic buffer 8 is provided between the pressing block 3 and the knife seat 4 .

[0050] In this embodiment, when the button 5 is not in contact with the pressing block 3 and the pressing block 3 is placed in the notch 2 at the upper end of the housing 1, the pressing block 3 is not fixed and may rotate upward. An elastic buffer 8 is provided between the pressing block 3 and the knife seat 4, and a force is applied to the pressing block 3 by the elastic buffer 8, so that the pressing block 3 rotates downward, thereby enabling the pressing block 3 to be fixed in the notch 2. When the button 5 is in contact with the pressing block 3, the elastic buffer 8 is compressed, which does not affect the rotation of the pressing block 3.

[0051] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation scheme. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the embodiments shown and described herein.

Claims

1. A medical catheter cutter, characterized in that: include: A housing (1) having a notch (2) at its upper end; A pressing block (3), one end of which is rotatably connected to a guide post on the inner wall of the housing (1), and the other end of which can be rotatably passed upward through the notch (2) to form a pressing block mating surface; A knife seat (4) which passes through the notch (2) and is connected to the housing (1); the end of the knife seat (4) close to the pressing block (3) is pointed, and the lower end is provided with a blade (41) corresponding to the mating surface of the pressing block; the upper end of the knife seat (4) is provided with a wire groove (42), and the wire groove (42) is inclined downward from the end close to the pressing block (3); A button (5) passes through the housing (1) and is slidably connected to a support plate (7) inside the housing (1), and is elastically connected to the housing (1) via a spring (6) arranged inside the housing (1). The button (5) is connected to a button pressing plate (51) extending above the wire groove (42). When an external force drives the button (5) to slide, the button (5) can slide to drive the pressing block (3) to rotate toward the blade (41), or drive the button pressing plate (51) to seal or open the wire groove (42).

2. A medical catheter cutter as claimed in claim 1, characterized in that: The buttons include: A button slide plate (52) slidably penetrates the housing (1) and is connected to the spring; A button baffle (53) is arranged on the upper end of the button slide plate (52), and a corresponding protrusion is provided on the pressing block (3); The button connecting plate (54) has two ends connected to the button sliding plate (52) and the button pressing plate (51) respectively.

3. A medical catheter cutter as claimed in claim 2, characterized in that: The upper end of the housing (1) is provided with a limiting piece (11) corresponding to the button connecting plate (54).

4. A medical catheter cutter as claimed in claim 2, characterized in that: One end of the button slide plate (52) located outside the housing (1) is connected to a pressing plate (55).

5. A medical catheter cutter as claimed in claim 1, characterized in that: The matching surface of the pressing block is provided with a knife groove (31) corresponding to the knife blade (41).

6. A medical catheter cutter as claimed in claim 1, characterized in that: An elastic buffer (8) is provided between the pressing block (3) and the knife seat (4).

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