CN218960955U - Mammary tissue marker pusher with locking insurance - Google Patents

Abstract

The utility model provides a breast tissue marker pusher with a locking safety, which comprises a pushing button, a puncture tube, a core rod and a marker, wherein the marker is placed in the puncture tube and is positioned at the front end of the puncture tube; the rear end of the core rod is fixedly connected with the push button, and the front end of the core rod stretches into the puncture tube; the pusher further comprises a safety locking device, wherein the safety locking device comprises a limiting rod and a safety button, and the rear end of the limiting rod is fixed with the pushing button; the safety button is provided with a bayonet for locking the core rod; under the locking state, the safety button tightly clamps the core rod through the bayonet, and the front end of the limiting rod is propped against the safety button. The utility model transfers the risk of failure or false touch of the instrument to the built-in safety locking device.

Description

Mammary tissue marker pusher with locking insurance

Technical Field

The utility model relates to the field of medical instruments, in particular to a breast tissue marker pusher with locking insurance.

Background

After breast penetration or sampling, the sample site may optionally be implanted with a breast tissue marker for later follow-up. Currently, breast tissue markers are typically implanted by a pusher. When the breast tissue marker is used, the breast tissue marker is placed at the head end of the puncture tube of the pusher, after percutaneous puncture and reaching a specified position, the pushing button on the pusher is pushed, the marker is pushed out by the core rod, the marker is left at the specified position, and then the pusher is pushed out.

Because the mammary gland tissue marker pusher on the market is disposable and cannot be restored after use, the problem is caused that the device is directly scrapped and cannot be used when a person touches the pusher by mistake or touches the push button of the pusher by mistake in the transportation process. The method for avoiding the problems is to externally arrange a device for limiting the movement of the push button, and take off the external device before use and then perform an operation, so that the operation time is increased, and the external device is easy to fall off in the transportation process.

Disclosure of Invention

In order to solve the problems, the utility model provides a breast tissue marker pusher with locking insurance, which comprises a push button, a puncture tube, a core rod and a marker, wherein the marker is placed in the puncture tube and is positioned at the front end of the puncture tube; the rear end of the core rod is fixedly connected with the push button, and the front end of the core rod stretches into the puncture tube; the pusher further comprises a safety locking device, wherein the safety locking device comprises a limiting rod and a safety button, and the rear end of the limiting rod is fixed with the pushing button; the safety button is provided with a bayonet for locking the core rod; under the locking state, the safety button tightly clamps the core rod through the bayonet, and the front end of the limiting rod is propped against the safety button.

Preferably, in the locked state, the bayonet is in interference fit with the core rod.

Preferably, the safety button is further provided with a sparse opening for unlocking the core rod, and the bayonet is communicated with the sparse opening; when unlocking, pressing the safety button, and enabling the core rod to enter the opening after being separated from the bayonet; in the unlocking state, the core rod moves relatively with the pushing button and the opening.

Preferably, the loose mouth is in clearance fit with the mandrel.

Preferably, the caliber of the bayonet is smaller than that of the sparse port, and the bayonet is communicated with the sparse port through a transition channel.

Preferably, the width of the transition channel gradually increases from the bayonet to the sparse opening, and the bayonet, the transition channel and the sparse opening are sequentially communicated and form a V-shaped channel.

Preferably, the safety button is provided with an avoidance hole matched with the limit rod, and in the unlocking state, the limit rod can penetrate into the avoidance hole and can move relative to the avoidance hole.

Preferably, the limiting rod is in clearance fit with the avoidance hole.

Preferably, the limiting rod is arranged in parallel with the core rod, and the safety button is arranged perpendicular to the core rod.

Preferably, the breast tissue marker pusher with the locking insurance further comprises a handle, wherein the rear end of the puncture tube is fixedly connected with the handle;

the limiting rod is positioned in the handle;

the push button comprises a button body and a push body, wherein the button body is fixedly arranged on the push body, and the push body is arranged in the handle in a sliding manner and is arranged in parallel with the core rod; the rear ends of the limiting rod and the core rod are fixedly connected with the pushing body; the button body protrudes to the outer side of the handle;

the safety button comprises a pressing body and a safety body, wherein the pressing body is fixedly arranged on the safety body, and the safety body is arranged in the handle in a sliding manner and is perpendicular to the core rod; the bayonet is arranged on the safety body; the pressing body protrudes to the outer side of the handle.

Compared with the prior art, the utility model has the following technical effects:

the utility model provides a breast tissue marker pusher with locking insurance, which transfers the risk of failure or false touch of an instrument to a built-in safety locking device, namely the safety locking device is built in the pusher, when the safety locking device is in a locking state, a limiting rod cannot pass through a safety button, the pushing button cannot advance, a core rod cannot be pushed, and the core rod cannot push out a marker. The safety locking device is arranged on the pusher, so that the technical problem that the device can be scrapped directly and cannot be used because of careless accidental touching of a person or mistakenly touching of a pushing button of the pusher in the transportation process is solved. The utility model has convenient operation (the safety button is pressed when the lock is unlocked), not only can reduce the operation time, but also the safety locking device can not accidentally drop off in the transportation process.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic illustration of an internal structure of a breast tissue marker pusher with locking safety according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a breast tissue marker pusher with locking safety in accordance with an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a safety button according to an embodiment of the present utility model;

FIG. 4 is a schematic plan view of a safety button according to an embodiment of the present utility model in a locked state;

FIG. 5 is a perspective view of a safety button according to an embodiment of the present utility model in a locked state;

FIG. 6 is a schematic diagram of a safety button in an unlocked state according to an embodiment of the present utility model;

fig. 7 is a perspective view of a safety button in an unlocked state according to an embodiment of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The technical scheme of the utility model is described in detail below by specific examples. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.

Referring to fig. 1 to 7, the present utility model adds a safety locking device based on the existing breast tissue marker pusher, and the present utility model transfers the risk of failure or false touch of an instrument to a built-in safety locking device, concretely, the pusher comprises a push button 5, a puncture tube 1, a core rod 2, a marker 6 and a safety locking device, wherein the marker 6 is placed in the puncture tube 1 and is located at the front end of the puncture tube 1. The rear end of the core rod 2 is fixedly connected with the push button 5, and the front end of the core rod 2 extends into the puncture tube 1 from the rear port of the puncture tube 1. In the puncture tube 1, the front end of the mandrel bar 2 is located behind the marker 6. The function of the mandrel 2 is to push the marker 6 at the front end of the penetration tube 1 out of the front port of the penetration tube 1 into the breast tissue.

The safety locking device comprises a limiting rod 3 and a safety button 4, wherein the rear end of the limiting rod 3 is fixed with the push button 5, namely the limiting rod 3 and the push button 5 are fixed together. The safety button 4 is provided with a bayonet 41 for locking the core rod 2, that is, in a locked state, please refer to fig. 4 and 5, the safety button 4 is sleeved on the core rod 2 through the bayonet 41, and the bayonet 41 is used for clamping the core rod 2, so as to fix the core rod 2. Thus, in the locked state, the bayonet 41 is in an interference fit with the mandrel 2, i.e. the mandrel 2 and the safety button 4 are relatively fixed. In the locked state, the front end of the limiting rod 3 abuts against the safety button 4, namely in the locked state, the limiting rod 3 is fixedly connected with the push button 5, so that the push button 5 cannot be pushed, and the relative fixity between the core rod 2 and the safety button 4 is further ensured.

When unlocking, only the safety button 4 is pressed forcefully to separate the core rod 2 from the bayonet 41, and the front end of the limiting rod 3 is separated from the safety button 4 (namely, the front end of the limiting rod 3 is not contacted with the safety button 4 any more), at this time, the push button 5 is pushed forward, the push button 5 pushes the core rod 2 forward, and then the core rod 2 pushes the marker 6 out of the front port of the puncture tube 1.

Further, the safety button 4 is further provided with a sparse opening 43 for unlocking the core rod 2, and the bayonet 41 is communicated with the sparse opening 43; when unlocking, the safety button 4 is pressed, and the core rod 2 is separated from the bayonet 41 and enters the sparse opening 43; referring to fig. 6 and 7, in the unlocked state, the mandrel 2 moves relatively with the push button 5 and the opening 43. In the unlocked state, the safety button 4 is sleeved on the core rod 2 through the opening 43, and since the core rod 2 is ensured to be capable of moving on the opening 43, a gap is formed between the core rod 2 and the wall of the opening 43, and then the opening 43 is required to be in clearance fit with the core rod 2.

The shape and size of the bayonet 41 and the opening 43 are matched with those of the mandrel 2, and the caliber of the bayonet 41 is smaller than that of the opening 43. In this embodiment, taking the core rod 2 as a cylindrical example, the bayonet 41 and the opening 43 are both circular, the caliber of the bayonet 41 is smaller than the diameter of the core rod 2, and the caliber of the opening 43 is larger than the diameter of the core rod 2.

Further, the bayonet 41 and the sparse port 43 are communicated through a transition channel 42:

as an embodiment, the width of the transition channel 42 gradually increases from the bayonet 41 toward the opening 43, and the bayonet 41, the transition channel 42, and the opening 43 are sequentially connected to form a V-shaped channel. Of course, the channel formed by sequentially connecting the bayonet 41, the transition channel 42, and the opening 43 is not limited to V-shape, and may be tapered.

Alternatively, the width of the transition channel 42 is constant from the bayonet 41 to the outlet 43, i.e. the transition channel 42 is a straight channel.

In this embodiment, the safety button 4 is further provided with an avoidance hole 44 matched with the limit rod 3, and in the locked state, the front end of the limit rod 3 is staggered from the avoidance hole 44; in the unlocked state, referring to fig. 6 and 7, the limiting rod 3 faces the avoiding hole 44, and when the push button 5 is pushed forward, the limiting rod 3 penetrates into the avoiding hole 44 and moves relative to the avoiding hole 44. In order to ensure that the relative displacement is generated between the limiting rod 3 and the avoiding hole 44, a gap is formed between the limiting rod 3 and the wall of the avoiding hole 44, namely, the limiting rod 3 is in clearance fit with the avoiding hole 44.

In this embodiment, the limiting rod 3 is disposed parallel to the core rod 2, and the safety button 4 is disposed perpendicular to the core rod 2.

In this embodiment, the breast tissue marker pusher with locking safety further comprises a handle 7, and the rear end of the puncture tube 1 is fixedly connected with the handle 7.

The limit bar 3 is positioned in the handle 7.

The push button 5 comprises a button body and a push body, and the button body is fixedly arranged on the push body. The pushing body is slidably arranged in the handle 7, and the pushing body is parallel to the core rod 2. The rear ends of the limiting rod 3 and the core rod 2 are fixedly connected with the pushing body. The button body protrudes outside the handle 7. The fixed connection in this embodiment may be detachable fixed connection or may be integral connection.

The safety button 4 comprises a pressing body and a safety body, the pressing body is fixedly arranged on the safety body, and the safety body is arranged in the handle 7 in a sliding manner and is perpendicular to the core rod 2; the bayonet 41, the sparse opening 43 and the avoidance hole 44 are all arranged on the safety body. The pressing body protrudes to the outside of the handle 7.

Working principle of breast tissue marker pusher with locking insurance:

referring to fig. 4 and 5, in the locked state, the safety button 4 is sleeved on the core rod 2 through the bayonet 41, and the safety button 4 clamps the core rod 2 through the bayonet 41. The front end of the limiting rod 3 is propped against the safety button 4, so that the relative fixity between the core rod 2 and the safety button 4 is further ensured.

When unlocking, the safety button 4 is pressed, the core rod 2 is separated from the bayonet 41 and enters the sparse port 43, and the core rod 2 is in an unlocking state. At this time, the front end of the stopper rod 3 is facing the escape hole 44, and the stopper rod 3 is also in the unlocked state. Referring to fig. 6 and 7, the push button 5 is then pushed forward, and the limit rod 3 penetrates the avoidance hole 44 and moves forward along the avoidance hole 44; simultaneously, the mandrel 2 moves forward along the opening 43, and the marker 6 at the front end of the puncture tube 1 is pushed out.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. The breast tissue marker pusher with the locking insurance comprises a push button, a puncture tube, a core rod and a marker, wherein the marker is placed in the puncture tube and is positioned at the front end of the puncture tube; the rear end of the core rod is fixedly connected with the push button, and the front end of the core rod stretches into the puncture tube; the pusher is characterized by further comprising a safety locking device, wherein the safety locking device comprises a limiting rod and a safety button, and the rear end of the limiting rod is fixed with the pushing button; the safety button is provided with a bayonet for locking the core rod; under the locking state, the safety button tightly clamps the core rod through the bayonet, and the front end of the limiting rod is propped against the safety button.

2. The breast tissue marker pusher with locking safety of claim 1, wherein in the locked state the bayonet is in an interference fit with the mandrel.

3. The breast tissue marker pusher with locking safety of claim 1, wherein a loose mouth for unlocking the core rod is further arranged on the safety button, and the bayonet is communicated with the loose mouth; when unlocking, pressing the safety button, and enabling the core rod to enter the opening after being separated from the bayonet; in the unlocking state, the core rod moves relatively with the pushing button and the opening.

4. A breast tissue marker pusher with locking safety according to claim 3, wherein said loose mouth is in clearance fit with said mandrel.

5. A breast tissue marker pusher with locking safety according to claim 3, wherein the aperture of said bayonet is smaller than the aperture of said opening, said bayonet and said opening being in communication via a transition channel.

6. The breast tissue marker pusher with locking safety of claim 5, wherein the width of the transition channel gradually increases from the bayonet to the sparse opening, the bayonet, the transition channel and the sparse opening being in communication and forming a V-shaped channel.

7. The breast tissue marker pusher with locking safety according to claim 1, wherein the safety button is provided with an avoidance hole matched with the limit rod, and in an unlocking state, the limit rod can penetrate into the avoidance hole and can move relative to the avoidance hole.

8. The breast tissue marker pusher with locking safety of claim 7, wherein said stop bar is in clearance fit with said relief hole.

9. The breast tissue marker pusher with locking safety of claim 1, wherein the stop bar is disposed parallel to the core rod and the safety button is disposed perpendicular to the core rod.

10. The breast tissue marker pusher with locking safety of any one of claims 1 to 9, further comprising a handle, the rear end of the puncture tube being fixedly connected to the handle;

the limiting rod is positioned in the handle;

the push button comprises a button body and a push body, wherein the button body is fixedly arranged on the push body, and the push body is arranged in the handle in a sliding manner and is arranged in parallel with the core rod; the rear ends of the limiting rod and the core rod are fixedly connected with the pushing body; the button body protrudes to the outer side of the handle;

the safety button comprises a pressing body and a safety body, wherein the pressing body is fixedly arranged on the safety body, and the safety body is arranged in the handle in a sliding manner and is perpendicular to the core rod; the bayonet is arranged on the safety body; the pressing body protrudes to the outer side of the handle.

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