CN217019425U - Intubation tube punching tool - Google Patents

Abstract

The utility model relates to the technical field of production and manufacturing of medical instruments, in particular to a cannula punching tool, which comprises a tool body, a punching assembly and a punching driving piece, wherein a cannula fixing hole channel is arranged on the tool body, a side hole is formed in the side wall of the cannula fixing hole channel, and the punching assembly penetrates through the side hole along a first direction; the punch drive moves in a second direction different from the first direction; the punching driving part is provided with a first inclined plane, the punching assembly is provided with a second inclined plane, and the first inclined plane and the second inclined plane can slide relatively to enable the punching driving part to drive the punching assembly to penetrate through the side hole. Compared with the prior art, the intubation perforating tool disclosed by the utility model cannot damage the surface of a product, and is higher in perforating precision and better in production efficiency.

Description

Intubation tube punching tool

Technical Field

The utility model relates to the technical field of production and manufacturing of medical instruments, in particular to a cannula punching tool.

Background

With the development of critical medicine, arteriovenous cannulas have become conventional treatment means and are widely applied to arteriovenous blood drainage in cardiac surgery.

The radial side of the arteriovenous cannula is usually provided with a side hole. In the punching process in the prior art, the concentricity of the side hole to be punched and the cutter must be judged by human eyes. However, due to the limitation of human vision, the process of drilling the side holes on the artery and vein cannulas is often not accurate enough, so that a large error exists between a processing result and an expected result, the process requirements of products cannot be met, and the rejection rate is high. Therefore, a suitable tool is needed to assist the punching process.

SUMMERY OF THE UTILITY MODEL

Based on the above, the utility model provides a cannula punching tool, which effectively solves the problem that the side hole cannot be punched accurately in the prior art.

A cannula punching tool comprises a tool body, a punching assembly and a punching driving piece, wherein a cannula fixing hole channel is formed in the tool body, a side hole is formed in the side wall of the cannula fixing hole channel, and the punching assembly can move along a first direction and penetrate through the side hole; the punch drive moves in a second direction different from the first direction; the punching driving part is provided with a first inclined plane, the punching assembly is provided with a second inclined plane, and the first inclined plane and the second inclined plane can slide relatively to enable the punching driving part to drive the punching assembly to move.

In one embodiment, more than one cannula fixing hole and/or more than one perforating assembly are provided, and the perforating driving member corresponds to the number of the perforating assemblies.

In one embodiment, the cannula punching tool further comprises a first guide structure and a second guide structure, the first guide structure can guide the punching assembly to move in a first direction, and the second guide structure can guide the punching driving member to move in a second direction.

In one embodiment, the first guide structure is a first channel arranged in the tool body, extending along a first direction and communicating with the outside, the second guide structure is a second channel arranged in the tool body, extending along a second direction, and the first channel is communicated with the second channel; the punch assembly is movable within the first channel and the punch drive is movable within the second channel.

In one embodiment, the circumferential position of the punch assembly remains constant.

In one embodiment, the second guide structure constrains the punch drive to a fixed circumferential position, and the punch drive constrains the punch assembly to a fixed circumferential position.

In one embodiment, the cannula punching tool further comprises a first resetting component enabling the punching component to be far away from the cannula fixing hole channel, and a second resetting component enabling the punching driving component to be far away from the punching component.

In one embodiment, the tool body is transparent.

In one embodiment, the cannula punching tool further comprises a driving member locking device for locking the position of the punching driving member.

In one embodiment, the punch assembly has an abutment end that mates with the cannula.

Advantageous effects

The intubation tube punching tool disclosed by the utility model realizes the fixation of the intubation tube to be punched by utilizing the intubation tube fixing pore channel, so that the damage to the surface of the intubation tube when the intubation tube is clamped by a traditional clamp is avoided, and the fixing method is simpler, more direct and more efficient. On the other hand, the punching driving piece and the punching assembly can form sliding surface connection through the second inclined surface and the first inclined surface, so that the punching driving piece can very stably drive the punching assembly to move in the first direction, the punching assembly can penetrate through the side hole in the fixed pore canal of the cannula, and the hole is formed at the target position of the cannula. Compared with the visual observation and manual hole opening in the prior art, the hole opening work of the insertion tube can be realized more quickly and accurately by using the insertion tube hole opening tool, the production efficiency is greatly improved, and the production rejection rate is obviously reduced.

Drawings

FIG. 1 is a schematic view of a cannula punching tool according to some embodiments of the present invention;

FIG. 2 is a cross-sectional view of a cannula punch tool of the present invention in a partial embodiment;

FIG. 3 is a top view of a cannula punch tool of the present invention in some embodiments;

FIG. 4 is a cross-sectional view of section BB of FIG. 3;

FIG. 5 is a front view of a cannula punch tool of the present invention in some embodiments;

FIG. 6 is a cross-sectional view of section CC of FIG. 5;

FIG. 7 is a schematic view of a piercing drive of the cannula piercing tool of some embodiments of the present invention;

FIG. 8 is a schematic view of a piercing assembly of a cannula piercing tool of some embodiments of the present invention;

the tool comprises a tool body 1, a punching assembly 2, a punching driving piece 3, a driving piece locking device 5, an insertion tube 6, an insertion tube fixing hole channel 11, a first channel 12, a second channel 13, a first inclined surface 21, a butt end 22, a second inclined surface 31, a tangent plane 32, a first resetting assembly 41 and a second resetting assembly 42.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will recognize without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 and 2, fig. 1 shows a schematic view of a cannula punching tool of the present invention for punching a side hole on a cannula 6, and fig. 2 shows a cross-sectional view of the cannula punching tool in fig. 1. As can be seen from fig. 1 and fig. 2, the cannula punching tool of the present invention includes a tool body 1, a punching assembly 2, and a punching driving member 3, wherein a cannula fixing hole 11 is provided in the tool body 1, a cannula 6 to be punched can be inserted into the cannula fixing hole 11 for fixing, a side hole located in a first direction is provided on a side wall of the cannula fixing hole 11, and the punching assembly 2 can move along the first direction and enter the cannula fixing hole 11 through the side hole to punch the cannula 6; the punch drive 3 is movable in a second direction different from the first direction; the subassembly 2 that punches has first inclined plane 21, the driving piece 3 that punches has second inclined plane 31, and relative slip between first inclined plane 21 and the second inclined plane 31 makes when punching the driving piece 3 that punches drives the subassembly 3 that punches passes the side opening.

According to the cannula punching tool, the cannula 6 to be punched is fixed by the cannula fixing hole 11, so that the damage to the surface of the cannula 6 when the traditional clamp clamps the cannula is avoided, and the fixing method is simpler, more direct and more efficient. On the other hand, the punch driving member 3 and the punch assembly 2 can form a sliding surface connection through the second inclined surface 31 and the first inclined surface 21, so that the punch driving member 3 can very smoothly drive the punch assembly 2 to move in the first direction, and the punch assembly 2 can pass through the side hole on the cannula fixing hole 11 to realize the hole punching at the target position of the cannula 6. Compared with the visual observation and manual hole opening in the prior art, the hole opening work of the insertion tube can be realized more quickly and accurately by using the insertion tube hole opening tool, the production efficiency is greatly improved, and the production rejection rate is obviously reduced.

Obviously, as shown in fig. 2, the cannula punching tool of the present invention may be provided with more than one cannula fixing hole 11, the cannula fixing holes 11 may be the same or different in size, and a plurality of punching assemblies 2 and punching driving members 3 are provided corresponding to a plurality of cannula fixing holes 11. By the arrangement, the inserting pipe punching tool can punch a plurality of inserting pipes 6 with the same size or different sizes at the same time, so that the machining efficiency is improved. Moreover, a plurality of punching assemblies 2 and punching driving pieces 3 corresponding to the punching assemblies 2 in number can be arranged on one insertion pipe fixing hole 11, so that the insertion pipe punching tool can simultaneously punch a plurality of holes on the insertion pipe 6, and application scenes of the insertion pipe punching tool are enriched.

Specifically, in order to enable the punching assembly 2 and the punching drive 3 to move in the first direction and the second direction, the cannula punching tool of the present invention further includes a first guide structure and a second guide structure, the first guide structure is capable of guiding the punching assembly 2 to move in the first direction, and the second guide structure is capable of guiding the punching drive 3 to move in the second direction.

It can be understood that the first guide structure and the second guide structure have various implementations, and the cannula punching tool of the present invention is not limited. For example, in some embodiments, the first and second guide structures may be rail structures disposed outside the tool body 1, and the rail structures have corresponding first and second directions, so as to guide the punch driving member 3 and the punch assembly 2 to move in a desired direction.

Preferably, as shown in fig. 3, 4, 5, and 6, in another partial embodiment, the first guide structure is a first channel 12 provided in the tool body 1 and extending along the first direction and communicating with the outside, the second guide structure is a second channel 13 provided in the tool body 1 and extending along the second direction, and the first channel 12 is communicated with the second channel 13; the punch assembly 2 is movable within the first channel 12 and the punch drive 3 is movable within the second channel 13. By virtue of the constraint of the first channel 12 and the second channel 13, it is ensured that the punch assembly 2 and the punch drive 3 move in a determined direction, so that the cannula 6 can be punched in a predetermined position.

In some embodiments, the cannula punching tool of the present invention preferably further sets the punching assembly 2 to maintain a fixed circumferential position, so as to prevent the punching assembly 2 from rotating during punching, which may cause a change in the circumferential position and thus cause an error in the punching process of the cannula 6. Specifically, in some embodiments, the radial cross-section of the second channel 13 is rectangular, and as shown in FIG. 7, one end of the punch driver 3 is provided with a second inclined surface 31 corresponding to the second channel 13 to form a wedge shape, and a tangential plane 32 matching the rectangular cross-section of the second channel 13 is circumferentially provided. Thus, when the punch driver 3 is inserted into the second channel 13, it can only move along the length of the second channel 13, but cannot rotate in the circumferential direction. As shown in fig. 8, in this embodiment, one end of the punching assembly 2 is provided with a limiting groove having a radial cross section matching the rectangle, and the bottom groove surface is the first inclined surface 21. In this way, when the punch driving member 3 in fig. 7 and the punch assembly 2 in fig. 8 are slidably connected through the first inclined surface 21 and the second inclined surface 31, the circumferential structure of the punch driving member 3 cooperates with the limiting groove of the punch assembly 2, so that the punch assembly 2 cannot rotate in the circumferential direction during being driven by the punch driving member 3.

Referring to fig. 2, in a partial embodiment shown in fig. 2, the cannula punching tool of the present invention further includes a first resetting component 41 for keeping the punching component away from the cannula fixing hole, and a second resetting component 42 for keeping the punching driving component away from the punching component. Through setting up first reset assembly 41 and second reset assembly 42, only under the human action, punch driving piece 3 just can be towards the subassembly 2 direction motion that punches and realize connecting, make punch driving piece 3 and punch subassembly 2 formation linkage motion, after the human action cancellation, first reset assembly 41 and second reset assembly 42 just order about punching subassembly 2 and punch driving piece 3 separately at once, make punch subassembly 2 and punch driving piece 3 resume independent motion state separately, so just reduced because the condition that some unpredictable factors lead to linkage motion to block. As some specific implementable examples, the first return assembly 41 and the second return assembly 42 are both springs, wherein one end of the spring serving as the first return assembly 41 abuts against the perforating assembly 2, and the other end abuts against the cannula fixing hole; while the spring serving as the second return member 42 is connected at one end to the punch driving member 3 and at the other end to the second passage 13.

In some embodiments, the cannula punching tool of the present invention further sets the tool body 1 to be transparent, for example, the tool body 1 is made of a light-transmitting material. Therefore, other assemblies arranged in the device can be clearly seen, and whether each assembly is in a normal operation state or not can be observed clearly. Moreover, the fixed angle and position of the cannula 6 can be adjusted more accurately to ensure that the perforation is performed at the target position of the cannula 6.

In some embodiments, as shown in fig. 1, the cannula punching tool of the present invention further comprises a driving member locking device 5, wherein the driving member locking device 5 can adjust the position of the punching driving member 3 and lock the position thereof. For example, the driver locking means 5 may comprise a fixing block provided with a threaded through hole and a bolt that can be screwed into the threaded through hole and adjust the length of the bolt in the threaded through hole. The bolt is connected with the punching driving piece 3 in an abutting mode. In this way, the specific position of the punch driving member 3 can be adjusted and locked by adjusting the bolt. It will be appreciated that there are many possible implementations of the driver locking device 5, and the foregoing embodiments are merely provided to facilitate a clear understanding of the utility model by those skilled in the art, and the cannula punching tool of the present invention is not limited thereto.

In some embodiments, as shown in fig. 8, in order to further improve the stability of the cannula punching tool of the present invention in punching the cannula 6 and improve the precision of punching the cannula 6, the punching assembly 2 further includes an abutting end 22 matching the contour of the cannula 6. In particular, said abutment end 22 is curved, the curvature of which should be compatible with the curvature of the cannula 6. So, when being connected with intubate 6, punching assembly 2 can perfectly laminate on the surface of intubate 6, can guarantee when punching that intubate 6 can not take place the displacement relatively punching assembly 2, finally makes intubate 6 can be punched by the accuracy.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the utility model, and these changes and modifications are all within the scope of the utility model. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. The cannula punching tool is characterized by comprising a tool body, a punching assembly and a punching driving piece, wherein a cannula fixing hole channel is arranged on the tool body, a side hole is formed in the side wall of the cannula fixing hole channel, and the punching assembly can move in a first direction and penetrate through the side hole; the punch drive moves in a second direction different from the first direction; the punching driving part is provided with a first inclined plane, the punching assembly is provided with a second inclined plane, and the first inclined plane and the second inclined plane can slide relatively to enable the punching driving part to drive the punching assembly to penetrate through the side hole.

2. The cannula punching tool according to claim 1, wherein more than one cannula fixing hole is provided,

and/or more than one punching assembly is provided, and the punching driving members correspond to the punching assemblies in number.

3. The cannula punching tool of claim 1, further comprising a first guide structure capable of guiding the punching assembly to move in a first direction and a second guide structure capable of guiding the punching drive to move in a second direction.

4. The cannula punching tool according to claim 3, wherein the first guide structure is a first channel provided in the tool body and extending along a first direction, the second guide structure is a second channel provided in the tool body and extending along a second direction, and the first channel is communicated with the second channel; the punch assembly is movable within the first channel and the punch drive is movable within the second channel.

5. The cannula punching tool according to claim 3, wherein the circumferential position of the punching assembly is kept constant.

6. The cannula punching tool of claim 5, wherein the second guide structure constrains the punch drive to a fixed circumferential position, and the punch drive constrains the punch assembly to a fixed circumferential position.

7. The cannula punching tool according to claim 1, further comprising a first resetting component for keeping the punching component away from the cannula fixing hole, and a second resetting component for keeping the punching driving component away from the punching component.

8. The cannula punching tool according to claim 1, wherein the tool body is transparent.

9. The cannula punching tool according to claim 1, further comprising a driving member locking device for locking the position of the punching driving member.

10. The cannula punching tool according to claim 1, wherein the punching assembly has an abutting end matched with the cannula.

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