Double-percussion marker pushing device

Abstract

The utility model relates to a double-percussion marker pushing device which comprises a device body, the device body is composed of an outer shell, an inner shell and a protective sleeve, the outer shell is arranged on the inner shell in a sleeved mode, the inner shell is composed of an upper inner shell and a lower inner shell, a first percussion device and a second percussion device are installed between the upper inner shell and the lower inner shell, a puncture needle is installed at the front end of the lower inner shell, and a second percussion device is installed at the rear end of the lower inner shell. The first percussion device and the second percussion device push the marker to the outside through the puncture needle, and the puncture needle is sleeved with the protective sleeve, so that the puncture needle is protected when the puncture needle is not used. The device has the advantages of being simple and reasonable in structure, convenient to operate and the like.

Description

Technical Field

[0001] The utility model belongs to the field of medical devices and relates to a double-firing marker pushing device. Background Art

[0002] Mammary tissue markers are guiding devices used by doctors to excise lesions during mammary gland lesion surgeries. Mammary tissue markers usually consist of a disposable pusher and a metal marker. The pusher serves as a carrier for the marker and plays a role in puncturing, fixing, and guiding the insertion of the tissue marker into the tissue. The placement of mammary tissue marker positioning needles under ultrasound guidance is a preoperative operation for mammary diseases, which can locate occult mammary gland lesions to ensure safer and faster surgeries.

[0003] After mammary gland puncture or sampling, it is possible to choose to implant a mammary tissue marker at the sampling site for future follow-up. Currently, mammary tissue markers are generally implanted through a pusher. When in use, the mammary tissue marker is placed at the inner head end of the puncture needle of the pusher. After percutaneous puncture and reaching the designated position, the push button on the pusher is pushed, and the marker is pushed out through the push rod, leaving the marker at the designated position. Subsequently, the pusher is removed.

[0004] Existing tissue marker pushing devices are usually disposable items. During use, the product corresponds to the marker one by one. For each placement of a marker, one pushing device is required. If multiple lesions require the placement of markers of different shapes, multiple pushing devices are needed, which not only incurs high costs but also brings inconvenience to clinical operations and causes multiple traumas to patients. Patent CN117338446A discloses a tissue marker pushing device that supports the quick replacement of multiple tissue markers. The markers are stored in an external connector, and during the use process, the required external connector needs to be connected to the pushing device. The product has complex operations, a long learning curve for doctors, and is not convenient for actual clinical use. To overcome these defects, a double-firing marker pushing device is designed. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies existing in the prior art and provide a double-firing marker pushing device with a simple and reasonable structure, simple operation, low cost, convenient use, reduced surgical consumables, and reduced usage costs.

[0006] The utility model is realized through the following technical solutions: A double-firing marker pushing device includes a device body, and the body consists of a housing, an inner housing, and a protective sleeve. The housing is sleeved on the inner housing. The inner housing is composed of an upper inner housing and a lower inner housing. A first firing device and a second firing device are installed between the upper inner housing and the lower inner housing. A puncture needle is installed at the front end of the lower inner housing. The first firing device and the second firing device push the marker to the outside through the puncture needle, and a protective sleeve is sleeved outside the puncture needle to protect the puncture needle in the non-use state.

[0007] Preferably, a first limiting bump is provided at the front position inside the lower inner shell. A guiding block is installed behind the first limiting bump. The guiding block is provided with a first groove and a second groove. The front of the first groove is of an open structure and is used to fix a first trigger. A second trigger is placed in the second groove.

[0008] Preferably, the first trigger is composed of a first push rod, a first spring, and a push seat. The push seat is detachably installed in the first groove or fixed in the groove to form an integral body with the groove. The first push rod is fixed in the front. After passing through the end of the lower inner shell and the needle groove provided on the first limiting bump, the first push rod is inserted into the puncture needle. A first spring is sleeved on the first push rod, and the first spring is placed in the space formed between the first groove and the first limiting bump.

[0009] Preferably, the first push rod is composed of a front push seat, a first push handle, and a first guiding strip. A first push handle is installed above the front push seat. A firing button is installed outside the first push handle and is installed in the button groove provided on the upper inner shell. Two relatively arranged first guiding strips are arranged on both sides below. A claw is provided in front of the first guiding strip, and a first notch is provided behind the claw. By pushing the first push handle, the entire guiding block is driven to move forward. When the first notch is caught in the needle groove provided on the first limiting bump and a sound appears, the first firing is completed. Second limiting bumps are provided on both sides of the tail of the first push rod. A limiting groove is provided at the position of the lower inner shell where the second limiting bump is located, and a first limiting block is inserted into the limiting groove to prevent accidental firing. The inside of the first push rod is hollow and is used to insert the second trigger.

[0010] Preferably, the second trigger is installed in the second groove and is composed of a second push rod, a rear trigger, and a second spring. The second groove is composed of a front chamber and a rear chamber. The front chamber and the rear chamber are separated by a partition plate with a first through hole. The rear trigger and the second spring are both placed in the rear chamber. The rear end of the second push rod is fixed to the rear trigger, and the front end passes through the partition plate and the second spring and is inserted into the inside of the first push rod.

[0011] Preferably, the rear trigger is composed of a rear push seat and a second guiding strip. The rear push seat consists of a rear push handle and a limit snap ring arranged in front of the rear push handle. The limit snap ring is stuck in the guiding grooves opened on both sides of the second groove, and limit holes are opened in the guiding grooves for inserting the second limit block. The second limit block passes through the placement card slot opened below the lower inner shell and is inserted into the limit hole to limit the firing of the limit snap ring. A second push rod is fixed at the middle position of the rear push seat, and second guiding strips are installed on both sides of the second push rod. Claws are opened at the ends of the second guiding strips, and second notches are also opened behind the claws. When the rear push seat is pushed and the second notch is stuck into the through hole on the partition plate with a sound, the second firing is completed. The limit snap ring and part of the rear push handle are arranged in the rear chamber, and the rest are exposed outside the rear chamber. When the upper inner shell and the lower inner shell are spliced, the rear push handle is exposed outside the inner shell.

[0012] Preferably, the outer shell wraps the inner shell, and corresponding button notches and button grooves are opened on the outer shell at the position of the firing button for placing the firing button. A needle-passing hole for the puncture needle to pass through is opened at the front end of the outer shell, and a through hole for the rear push handle is opened at the rear. Anti-slip grooves and a second through hole for placing the first limit block and the second limit block are also opened on the outer shell.

[0013] Preferably, a pushing direction arrow is provided on the rear trigger to indicate the firing sequence and direction during the operation.

[0014] Preferably, scale marks are provided on the tube body of the puncture needle for marking and recording the position during the surgical penetration process. A puncture needle tip is provided at the front end of the puncture needle, and the puncture needle tip is provided with blade edges at different angles of the front and rear corners to increase the sharpness of the puncture needle and facilitate the penetration into the breast tissue during the operation.

[0015] Preferably, pushing direction arrows are engraved on both the first limit block and the second limit block to prompt the user's surgical operation and facilitate clinical use.

[0016] The beneficial effects of the present utility model are as follows:

[0017] A double-trigger marker pushing device designed by the present utility model pre-sets 2 tissue markers in one pusher device, can realize the release of 2 markers with one puncture, has a simple overall operation, is convenient for clinical use, reduces the use or stocking cost, and provides a more convenient surgical consumable solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an exploded structural schematic diagram of the present utility model.

[0019] Figure 2 It is an overall structural schematic diagram of the present utility model.

[0020] Figure 3 This is the state diagram of the present utility model before firing.

[0021] Figure 4 This is the state diagram of the present utility model after complete firing.

[0022] Figure 5 This is the schematic diagram of the internal structure of the present utility model Figure 1 .

[0023] Figure 6 This is the schematic diagram of the internal structure of the present utility model Figure 2 .

[0024] Figure 7 This is the internal component diagram of the present utility model.

[0025] Figure 8 This is the internal component structure of the present utility model Figure 1 .

[0026] Figure 9 This is the internal component structure of the present utility model Figure 2 .

[0027] Figure 10 This is the schematic diagram of the structure of the puncture needle in the present utility model. Detailed implementation manner

[0028] To enable those of ordinary skill in the art to more clearly understand the purpose, technical solution, and advantages of the present utility model, the following further elaborates on the present utility model in conjunction with the drawings and embodiments.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "horizontal", "vertical", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model, rather than indicating or implying that the device or component referred to must have a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0030] The following will introduce the present utility model in detail with reference to the drawings: As Figures 1 - 4 shown, a double-firing marker pushing device includes a device body, and the body is composed of an outer shell 1, an inner shell, and a protective sleeve 2. Among them, the outer shell 1 is sleeved on the inner shell, and the inner shell is composed of an upper inner shell 3 and a lower inner shell 4. A first firing device 5 and a second firing device 6 are installed between the upper inner shell 3 and the lower inner shell 4. A puncture needle 7 is installed at the front end of the lower inner shell 4. The first firing device 5 and the second firing device 6 push the marker to the outside through the puncture needle 7, and a protective sleeve 2 is sleeved outside the puncture needle 7 to protect the puncture needle 7 in the non-use state.

[0031] The front end of the lower inner shell of the present utility model is also provided with a stepped shaft, which is convenient for cooperating with the protective sleeve. The protective sleeve enables neither the needle tube nor the needle tip of the puncture needle to be exposed outside, and can protect the puncture needle from being damaged during storage and transportation, and also prevent accidental injury to people or objects contacted before use by the puncture needle.

[0032] A first limiting convex block 8 is provided at the front position inside the lower inner shell 4. A guide block 9 is installed behind the first limiting convex block 8. The guide block 9 is provided with a first groove 10 and a second groove 11. The front of the first groove 11 is of an open structure and is used for fixing the first trigger 5 in the middle. The second trigger 6 is placed in the second groove 11. Among them, the puncture needle and the first push rod are hollow pipe fittings, and the second push rod is a solid rod. The puncture needle, the first push rod and the second push rod are coaxially matched, with the puncture needle located in the outermost layer and the second push rod located in the innermost layer. The setting of the guide block of the present utility model is used to facilitate the assembly and connection of the upper and lower inner shells and the handle housing, and can limit the rotational movement of the handle housing.

[0033] The first trigger 5 is composed of a first push rod 12, a first spring 13 and a push seat 14. Among them, the push seat 14 is detachably installed in the first groove 10 or fixed in the groove to form an integral body with the groove. The first push rod 12 is fixed in the front. After the first push rod 12 passes through the end of the lower inner shell 4 and the needle slot 22 opened on the first limiting convex block 8, it is inserted into the puncture needle 7. A first spring 13 is sleeved on the first push rod 12, and the first spring 13 is placed in the space formed between the first groove 10 and the first limiting convex block 8.

[0034] As Figures 5 - 9 shown, the first push rod 12 is composed of a front push seat 15, a first push handle 16 and a first guiding strip 17. A first push handle 16 is installed above the front push seat 15. A firing button 18 is installed outside the first push handle 16. The firing button 18 is installed in the button slot 19 opened on the upper inner shell 3. Two relatively arranged first guiding strips 17 are arranged on both sides below. A claw 20 is opened in front of the first guiding strip 17, and a first notch 21 is opened behind the claw 20. By pushing the first push handle 16, the entire guide block 9 is driven to move forward. When the first notch 21 is caught in the needle slot 22 opened on the first limiting convex block 8 and a sound appears, the first firing is completed. Second limiting convex blocks 23 are opened on both sides of the tail of the first push rod 12. A limiting groove 24 is opened at the position of the lower inner shell 4 where the second limiting convex blocks 23 are located. A first limiting block 25 is inserted into the limiting groove 24 to prevent accidental firing. The inside of the first push rod 12 is hollow and is used for inserting the second trigger 6.

[0035] The second firing device 6 is installed in the second groove 11 and consists of a second push rod 46, a rear firing device 26, and a second spring 27. The second groove 11 is composed of a front chamber 28 and a rear chamber 29. The front chamber 28 and the rear chamber 29 are separated by a partition plate 30 with a first through hole 47. The rear firing device 26 and the second spring 27 are both placed in the rear chamber 29. The rear end of the second push rod 46 is fixed to the rear firing device 26, and the front end passes through the partition plate 30 and the second spring 27 and is inserted into the first push rod 12.

[0036] In the present utility model, the first marker is placed in the front end tube of the puncture needle of the pusher, in front of the first push rod, and the second marker is placed in the front end tube of the first push rod, in front of the second push rod.

[0037] In the present utility model, a spring is respectively arranged on the first push rod and the second push rod to provide a certain damping when pushing the push rod forward, for the feedback of the feel of pushing the firing device during the operation, and can also prevent accidental triggering.

[0038] In order to prevent the product from being accidentally fired before the operation, a first limit block is provided. The first limit block is in the lower inner shell to limit the axial movement of the guide block. Before pushing the firing button, the first limit block needs to be pushed horizontally towards the handle direction to release the limit of the guide block, and then the firing button is pushed to release the first marker. During this process, the guide block moves forward together with the rear firing device.

[0039] The rear firing device 26 consists of a rear push seat 31 and a second guide strip 38. The rear push seat 31 consists of a rear push handle 33 and a limit snap ring 34 arranged in front of the rear push handle 33. The limit snap ring 34 is stuck in the guide grooves 35 opened on both sides of the second groove 11, and a limit hole 36 is opened in the guide groove 35 for inserting a second limit block 37. The second limit block 37 passes through the placement card slot 48 opened below the lower inner shell 4 and is inserted into the limit hole 36 to limit the firing of the limit snap ring 34. The second push rod 46 is fixed at the middle position of the rear push seat 31, and second guide strips 38 are installed on both sides of the second push rod 46. Claws are opened at the ends of the second guide strips 38, and a second notch 39 is also opened behind the claws. When the rear push seat 33 is pushed and the second notch 39 is stuck into the first through hole 47 on the partition plate 30 and a sound appears, the second firing is completed. The limit snap ring 34 and a part of the rear push handle 33 are arranged in the rear chamber 29, and the rest are exposed outside the rear chamber 29. When the upper inner shell 3 and the lower inner shell 4 are spliced, the rear push handle 33 is exposed outside the inner shell.

[0040] In the present utility model, a limiting hole is provided at the left position of the tail of the guiding groove (guiding block). The second limiting block is installed between the guiding block and the lower inner shell through this through hole. The second limiting block restricts the axial movement of the rear trigger, so as to ensure that the second marker will not be released in advance before the first marker is completely released.

[0041] The second limiting block of the present utility model is placed in the lower inner shell. After the second limiting block is used in cooperation with the limiting hole, it provides a locking mechanism for the rear trigger. After the release of the first marker is completed, the second limiting block is pushed forward along the handle direction. At the same time, after the second limiting block is taken out downward, it is separated from the limiting snap ring of the rear trigger, and the limit of the rear trigger is released. Then, the rear trigger is pushed to release the second marker.

[0042] The outer shell of the inner shell is wrapped with an outer shell 1. A corresponding button notch 40 and button groove 41 are provided on the outer shell 1 at the position of the firing button 18 for placing the firing button 18. A needle-passing hole 42 for the puncture needle 7 to pass through is provided at the front end of the outer shell 1, and a rear push handle through hole 43 is provided at the rear. Anti-slip grooves 44 and a second through hole 38 for placing the first limiting block 25 and the second limiting block 37 are also provided on the outer shell 1. A firing prompt "1" is provided on the firing button, which is used to prompt the firing sequence during the operation and is the release button for the first marker.

[0043] The rear trigger 26 is engraved with a firing sequence "2" prompt and a pushing direction arrow, which are used to prompt the firing sequence and direction during the operation and are the release button for the second marker. Arrow-shaped opening and closing structures are provided at the front ends of both the rear trigger and the guiding block. When the preset stroke is reached when the firing button or the rear trigger is pushed, the opening and closing structure rebounds through the limiting strip and can make a clicking sound, which is used to prompt the user during the operation that the marker has been completely released.

[0044] As Figure 10 shown, scale marks are provided on the tube body of the puncture needle 7 for position marking and recording during the surgical penetration process. A puncture needle tip is provided at the front end of the puncture needle. Different angles of cutting edges are provided at the front and rear corners of the puncture needle tip to increase the sharpness of the puncture needle and facilitate the penetration into the breast tissue during the operation. During the operation, no other puncture tools are required for matching, and the surgical puncture can be directly carried out, which is convenient for intraoperative operation and reduces the surgical cost. A beveled opening is provided at the rear end of the guiding needle to facilitate the penetration of the needle during the assembly process. The first limiting block 25 and the second limiting block 37 are both engraved with a pushing direction arrow 45, which is used to prompt the user's surgical operation and is convenient for clinical use.

[0045] The outer shell of the pushing device of the present utility model is designed in a cylindrical shape as a whole. The thick part in the middle is beneficial for the user to hold with the hand, with an ergonomic design, comfortable holding feel, small size, and can be operated with one hand during clinical use, and the other hand can be used for image-guided operation. The forming process of the handle shell can adopt high molecular plastic injection molding and then sleeved on the inner shell or injection molding with rubber coating on the inner shell. Different numbers of anti-slip grooves can be regularly or irregularly arranged on the handle to help increase the friction during puncture, prevent slipping, and at the same time enhance the holding feeling and make it more labor-saving to use.

[0046] The working process of the present utility model is as follows:

[0047] During the operation, the surgeon determines the surgical approach and surgical method according to the comprehensive situation of the patient.

[0048] 1. Prepare the site to be marked as required and administer sufficient anesthetic as required;

[0049] 2. Remove the product packaging, take out the marker product, and remove the protective sleeve;

[0050] 3. Use appropriate imaging technology to locate the placement target area;

[0051] 4. Insert the puncture needle into the breast tissue and guide it to the target area, and refer to the scale markings on the outer tube of the puncture needle to place the tip of the needle just in contact with the target;

[0052] 5. Press the first limit block and push the firing button forward to release the first marker until a firm click is heard or felt and the button is locked in place;

[0053] 6. Locate and determine the second target placement area, push the second limit block forward, and then push the rear trigger forward to release the second marker until a firm click is heard or felt and the rear trigger is locked in place;

[0054] 7. After releasing two markers, withdraw the pusher handle for harmless treatment.

[0055] The specific embodiments described herein are only illustrative of the principles and effects of the present utility model and are not used to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A double-shot marker pushing device, comprising a device body, characterized in that: The body is composed of an outer shell, an inner shell, and a protective sleeve, wherein the outer shell is sleeved on the inner shell, and the inner shell is composed of an upper inner shell and a lower inner shell, a first trigger and a second trigger are installed between the upper inner shell and the lower inner shell, a puncture needle is installed at the front end of the lower inner shell, the first trigger and the second trigger push the marker to the outside through the puncture needle, and a protective sleeve is arranged on the outer sleeve of the puncture needle to protect the puncture needle when not in use.

2. The double-shot marker pushing device according to claim 1, characterized in that: A first limiting protrusion is provided at the front position in the lower inner shell, a guide block is installed behind the first limiting protrusion, a first groove and a second groove are provided on the guide block, the front of the first groove is an open structure, the middle is used to fix the first firing device, and the second firing device is placed in the second groove.

3. The double-shot marker pushing device according to claim 2, characterized in that: The first firing device is composed of a first push rod, a first spring, and a push seat, wherein the push seat can be detachably installed in the first groove or fixed in the groove to form a whole with the groove, and a first push rod is fixed in the front. After the first push rod passes through the end of the lower inner shell and the needle groove opened on the first limiting protrusion, it is inserted into the puncture needle. A first spring is sleeved on the first push rod, and the first spring is placed in the space formed between the first groove and the first limiting protrusion.

4. The double-shot marker pushing device according to claim 3, characterized in that: The first push rod is composed of a front push seat, a first push handle, and a first guide strip. The first push handle is installed above the front push seat, and a firing button is installed outside the first push handle. The firing button is installed in a button groove opened on the upper inner shell, and two first guide strips are arranged oppositely on both sides below. A claw is opened in front of the first guide strip, and a first notch is opened behind the claw. By pushing the first push handle, the entire guide block is driven to move forward. When the first notch is inserted into the needle groove opened on the first limiting protrusion and a sound is produced, the first firing is completed. Second limiting protrusions are opened on both sides of the tail of the first push rod, and a limiting groove is opened at the second limiting protrusion located at the lower inner shell. The first limiting block is inserted into the limiting groove to prevent accidental firing. The first push rod is hollow inside and is used to insert the second firing device.

5. The double-shot marker pushing device according to claim 4, characterized in that: The second firing device is installed in the second groove and consists of a second push rod, a rear firing device, and a second spring. The second groove consists of a front chamber and a rear chamber. The front chamber and the rear chamber are separated by a partition with a first through hole. The rear firing device and the second spring are both placed in the rear chamber. The rear end of the second push rod is fixed to the rear firing device, and the front end passes through the partition and the second spring and is inserted into the first push rod.

6. The double-shot marker pushing device according to claim 5, characterized in that: The rear firing device is composed of a rear push seat and a second guide strip. The rear push seat is composed of a rear push handle and a limiting clamp ring arranged in front of the rear push handle. The limiting clamp ring is clamped in the guide grooves opened on both sides of the second groove, and a limiting hole is opened in the guide groove. The limiting hole is used to insert the second limiting block. The second limiting block passes through the placement slot opened at the bottom of the lower inner shell and is inserted into the limiting hole, thereby limiting the firing of the limiting clamp ring. A second push rod is fixed in the middle position of the rear push seat, and second guide strips are installed on both sides of the second push rod. A claw is opened at the end of the second guide strip, and a second notch is also opened behind the claw. When the rear push seat is pushed, the second notch is clamped into the through hole on the partition and a sound is produced, completing the second firing. The limiting clamp ring and the rear push handle are partially arranged in the rear chamber, and the rest is exposed outside the rear chamber. When the upper inner shell and the lower inner shell are spliced, the rear push handle is exposed to the outside of the inner shell.

7. The double-shot marker pushing device according to claim 6, characterized in that: The inner shell is wrapped with an outer shell, and a corresponding button notch and button groove are provided on the outer shell at the firing button for placing the firing button, a needle hole for allowing the puncture needle to pass through is provided at the front end of the outer shell, and a rear push handle through hole is provided at the rear, and the outer shell is also provided with an anti-slip groove and a second through hole for placing a first limit block and a second limit block.

8. The double-shot marker pushing device according to claim 6, characterized in that: The rear firing device is provided with a pushing direction arrow to indicate the firing sequence and direction during the surgical procedure.

9. The double-shot marker pushing device according to claim 7, characterized in that: The tube body of the puncture needle is provided with a scale mark for marking and recording the position of the surgical penetration process. A puncture needle tip is provided at the front end of the puncture needle. The puncture needle tip is provided with cutting edges at different front and rear angles to increase the sharpness of the puncture needle and facilitate penetration of breast tissue during surgery.

10. The double-shot marker pushing device according to claim 7, characterized in that: The first limit block and the second limit block are both engraved with push direction arrows to remind the user of surgical operation, which is convenient for clinical use.

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