Adjustable marker pushing device
By designing an adjustable marker delivery device, the problem of fixed puncture tube length in existing technologies has been solved, enabling adjustable puncture needle length, reducing production and medical institution inventory costs, expanding the clinical application scope, and improving the convenience and safety of surgery.
Patent Information
- Application Number
- CN202422002977.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-08-19
AI Technical Summary
The fixed length of the puncture tube in existing breast tissue marker delivery devices means that different working length marker delivery kits are needed for different lesion locations, increasing the inventory costs for manufacturers and medical institutions.
An adjustable marker delivery device was designed. Through a structure consisting of an inner shell and an outer shell, the inner shell is equipped with a strip guide rail and a limiting groove. Combined with a guide sleeve and a protective sleeve, the length of the puncture needle can be adjusted. It is equipped with an adjustment limiting device and a firing device, which simplifies operation and reduces costs.
It enables adjustable needle length, covering existing product length specifications, reducing the need for multiple specifications to be stocked, lowering usage and stocking costs, expanding the clinical applicability, and improving the convenience and safety of surgery.
Smart Images
Figure CN223569408U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of medical devices, and relates to an adjustable marker pushing device. BACKGROUND
[0002] The breast tissue marker is used as a guiding device for a doctor to resect a lesion in a breast lesion operation, and is usually composed of a disposable pusher and a metal marker. The pusher serves as a carrier of the marker to perform puncture, fixation and guidance to punch into the tissue marker. The ultrasound-guided breast tissue marker positioning needle placement is a preoperative operation for breast diseases, which can locate a concealed breast lesion to ensure that the operation is safer and faster.
[0003] After breast puncture or sampling, a breast tissue marker can be implanted at the sampling site to facilitate follow-up in the future. At present, the breast tissue marker is generally implanted through a pusher. In use, the breast tissue marker is placed at the head end inside the puncture tube of the pusher, punctures the skin and reaches the designated position, the push button on the pusher is pushed, the marker is pushed out through the push-out needle, the marker is left at the designated position, and then the pusher is removed.
[0004] The existing tissue marker pushing device has a fixed length of the front-end puncture tube. Due to different lesion positions, different working length marker pushing sets need to be prepared in clinical use, so that the production manufacturers and medical institutions have high inventory costs. To overcome these defects, the present application provides an adjustable marker pushing device, which can support the length adjustment of the puncture outer tube, reduce the use or inventory cost, expand the clinical application range, and provide a more convenient surgical consumable solution. UTILITY MODEL CONTENTS
[0005] The utility model aims at overcoming the defects in the prior art, and provides an adjustable marker pushing device which is simple and reasonable in structure, simple to operate, low in cost, convenient to use, reduces surgical consumables and reduces use cost.
[0006] The utility model is realized through the following technical scheme: an adjustable marker pushing device, which comprises a shell and an inner shell, the inner shell is wrapped with a pusher, the inner shell is composed of an upper inner shell and a lower inner shell, a strip-shaped guide rail for placing the pusher is formed in the lower inner shell, the strip-shaped guide rail can limit the rotation of the pusher, a limiting groove is formed at the front end of the strip-shaped guide rail, a guide sleeve is installed in the limiting groove, the end part of the pusher is placed in the strip-shaped guide rail through the guide sleeve, then the upper inner shell is covered, an outer shell is arranged outside the sleeve to form a complete pushing device, and a protective sleeve is arranged at the front end of the guide sleeve and the end part of the pusher.
[0007] As preferred: the push device is composed of a puncture needle assembly and a trigger, the puncture needle assembly is composed of a push seat, a puncture needle and a push rod, the front end of the push seat is connected with the puncture needle through an outer needle seat, a guide sleeve is sleeved on the puncture needle, the rear tail is provided with the push rod, a groove is formed on the push seat near the front end, the trigger is installed in the groove, and an adjusting limiting device is further arranged on the push seat to facilitate the adjustment of the initial length of the puncture needle.
[0008] As preferred: the trigger is composed of a trigger button, an inner needle seat and a push-out needle, the front of the inner needle seat is provided with the push-out needle, the push-out needle is inserted into the puncture needle, the trigger button is installed above the inner needle seat, and elastic sheets are further installed on the two sides of the inner needle seat, the groove of the push seat is provided with symmetrically arranged front and rear clamping grooves, the elastic sheets are installed in the rear clamping grooves, when the trigger button is pushed, the elastic sheets are drawn out of the rear clamping grooves and moved to the front clamping grooves, and a sound is emitted after the elastic sheets are moved to the front clamping grooves, that is, the trigger is completed, and the rear of the groove is provided with an adjusting limiting device.
[0009] As preferred: the limiting device is a tight knob and a limiting block, the tight knob is installed in a long strip-shaped knob groove formed on the side of the push seat, the limiting block is installed on an adjusting handle arranged between the rear of the push seat and the push rod, threads are arranged on the adjusting handle, the limiting block is screwed on the adjusting handle with threads, and a scale is marked on the adjusting handle, so that the adjusting size can be conveniently checked.
[0010] As preferred: the guide sleeve is composed of a limiting sheet, a clamping seat and a guide head, through holes are formed in the limiting sheet, the clamping seat and the guide head for inserting the puncture needle, the limiting sheet is inserted between the limiting groove and the top of the upper shell and the lower shell, the clamping seat is clamped into the limiting groove, the clamping seat is positioned through positioning holes formed in the limiting groove and a positioning column arranged below the clamping seat, the guide head is arranged in front of the clamping seat and is placed in the through hole formed in front of the upper inner shell and the lower inner shell, part of the end of the guide head is exposed outside the outer shell, and a protective sleeve is sleeved on the guide head exposed outside the outer shell.
[0011] As preferred: the outer shell has a streamlined structure with large middle and small two ends, the large middle part is beneficial to the holding of the hands of the user, the handle shell is ergonomic, a long strip-shaped groove for placing the trigger button is formed in one side of the middle position, a long strip-shaped slot hole is formed in the groove, a through hole is formed in one side wall of the groove for installing the tight knob, and an anti-skid strip is formed on the side opposite to the groove.
[0012] As preferred: a scale mark is arranged on the puncture needle tube for marking and recording the position in the surgical insertion process, a puncture needle tip is arranged at the front end of the puncture needle, and the puncture needle tip is provided with front and rear angle different angle blades to increase the sharpness of the puncture needle.
[0013] The beneficial effects of the utility model are as follows:
[0014] The adjustable marker pushing device has the advantages of simple and reasonable structure, simple operation, low cost, convenient use, reduced surgical consumables, reduced use cost and the like. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is an explosion structure schematic view of the utility model.
[0016] Figure 2 It is an assembly drawing (the longest state) of the utility model.
[0017] Figure 3 It is an assembly drawing (the shortest state) of the utility model.
[0018] Figure 4 It is an internal component drawing of the utility model.
[0019] Figure 5 It is a structure schematic view of a puncture needle in the utility model.
[0020] Figure 6 It is a structure schematic view of a push rod in the utility model.
[0021] Figure 7 It is a structure schematic view of a push-out needle in the utility model.
[0022] Figure 8 It is a structure schematic view of a shell in the utility model Figure 1 .
[0023] Figure 9 It is a structure schematic view of a shell in the utility model Figure 2 . DETAILED DESCRIPTION
[0024] In order to make those skilled in the art more clearly understand the purpose, technical scheme and advantages of the utility model, the utility model will be further described below in combination with the drawings and examples.
[0025] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms such as "up", "down", "left", "right", "inner", "outer", "horizontal", "vertical" is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model, and does not indicate or imply that the indicated device or element must have a particular orientation, so it cannot be understood as a limitation on the utility model.
[0026] The utility model will be described in detail below in combination with the drawings: as Figures 1-3As shown, an adjustable marker pushing device includes an outer shell 1 and an inner shell 2. The inner shell 2 encloses a pusher. The inner shell 2 consists of an upper inner shell (not shown in the figure) and a lower inner shell 3. A strip guide rail 4 for placing the pusher is provided in the lower inner shell 3. The strip guide rail 4 can restrict the rotation of the pusher and provide guidance for the axial movement of the pusher. A limiting groove 5 is provided at the front end of the strip guide rail 4. A guide sleeve 6 is installed in the limiting groove 5. The end of the pusher passes through the guide sleeve 6 and is placed in the strip guide rail 4. After being covered by the upper inner shell, the outer shell is then covered to form a complete pushing device. A protective sleeve 7 is installed at the front end of the guide sleeve 6 at the end of the pusher.
[0027] like Figures 4-6 As shown, the pushing device consists of a puncture needle assembly and a firing device. The puncture needle assembly consists of a push base 8, a puncture needle 9, and a push rod 10. The front end of the push base 8 is connected to the puncture needle 9 through an outer needle seat 11. A guide sleeve 6 is fitted on the puncture needle 9, and a push rod 10 is installed at the rear end. A groove 12 is provided on the push base 8 near the front end, and a firing device is installed in the groove 12. An adjustment and limiting device is also arranged on the push base 8 to facilitate adjustment of the initial length of the puncture needle 9.
[0028] like Figure 7 As shown, the firing device consists of a firing button 13, an inner needle seat 14, and an ejector needle 15. The ejector needle 15 is installed in front of the inner needle seat 14 and is inserted into the puncture needle 9. The firing button 13 is installed above the inner needle seat 14. Spring pieces 16 are also installed on both sides of the inner needle seat 14. A slot 17 with symmetrical front and rear arrangement is opened in the groove 12 of the push seat 8. The spring piece 16 is installed in the rear slot 18. When the firing button 13 is pushed, the spring piece slides out of the rear slot 18 and moves into the front slot 19, and then makes a sound, which completes the firing. An adjustment limit device is opened at the rear of the groove 12.
[0029] This invention features two small springs on the side of the inner needle holder. Pushing the firing button causes the inner needle holder to move longitudinally inside the front end of the push rod. When the needle extension reaches its maximum stroke, a clicking sound is emitted to indicate to the user that the marker has been released during the surgical procedure.
[0030] In this invention, the metal marker is placed inside the front tube of the puncture needle of the pusher, located in front of the push needle. The rear end of the push needle is connected and fixed to the inner needle seat, and the front end of the push needle is inserted into the puncture needle. The upper part of the inner needle seat is connected to the firing button. When the firing button is pushed forward, the push needle moves axially forward inside the puncture needle, thereby releasing the marker located inside the front end of the puncture needle.
[0031] The limiting device is a tight knob 20 and a limiting block 21, wherein the tight knob 20 is installed in a long strip-shaped knob slot 22 formed on the side of the push seat 8, the limiting block 21 is installed on an adjusting handle 23 arranged between the rear of the push seat 8 and the push rod 10, the adjusting handle 23 is provided with a thread 24, the limiting block 21 is screwed on the thread adjusting handle 23, and the adjusting handle 23 is marked with a scale 25, which is convenient for checking the adjusting size.
[0032] The adjusting handle of the push rod is designed as a screw rod, which is used in cooperation with the limiting block. In order to accurately adjust, the adjusting handle is marked with a scale. If it is necessary to adjust the length of the puncture needle, the tight knob is loosened first, and then the limiting block is screwed to the required length. Then, the push rod is pushed forward until the limiting block is attached to the tail end of the handle shell and cannot be moved. The tight knob is tightened, and the length adjustment of the puncture needle is completed.
[0033] The push rod can be used to adjust the working length of the puncture needle. The adjustable range of the working length of the puncture needle is preferably 90-120mm, which covers the length specifications of the existing marketed products. It is not necessary to store multiple specifications, which is convenient for accurate puncture positioning around important organs, expands the clinical application range, and reduces the use or storage cost.
[0034] The puncture needle assembly needs to be locked by the tight knob before the push button is pushed, so as to fix the puncture needle assembly, and then the push button is pushed to release the marker. The tight knob is designed as a screw rod structure and is installed in the long strip-shaped knob slot through the handle shell and the inner shell. If it is necessary to lock, the right-handed locking knob is used to make the end face of the knob abut against the bottom surface of the key groove of the push rod, so as to limit the axial movement of the push rod. If it is necessary to move the push rod, the left-handed locking knob is used to make the end face of the knob separate from the bottom surface of the key groove of the push rod, and then the push rod is moved.
[0035] The guide sleeve 6 is composed of a limiting piece 26, a clamping seat 27 and a guide head 28. A through hole is formed in the limiting piece 26, the clamping seat 27 and the guide head 28 for inserting the puncture needle 9. The limiting piece 26 is inserted between the limiting slot 5 and the top of the upper shell and the lower shell 3. The clamping seat 27 is clamped into the limiting slot 5 and is positioned by the positioning hole 29 formed in the limiting slot 5 and the positioning column 30 arranged below the clamping seat 27. The guide head 28 is arranged in front of the clamping seat 27 and is placed in the through hole formed in front of the upper inner shell and the lower inner shell 3. Part of the end of the guide head 28 is exposed outside the outer shell 1, and the protective sleeve 7 is sleeved on the guide head 28 exposed outside the outer shell 1.
[0036] The guide sleeve is sleeved on the puncture needle to provide a guiding effect for the axial movement of the puncture needle. The positioning column arranged on the guide sleeve cooperates with the positioning hole of the handle inner shell to fix the guide sleeve. The front end of the guide sleeve cooperates with the protective sleeve, and the protective sleeve makes the needle tube and the needle tip of the puncture needle not exposed outside. The puncture needle can be protected from being damaged during storage and transportation, and the person or object contacted before use can be prevented from being accidentally injured by the puncture needle.
[0037] As Figures 8-9 shown, the shell 1 is a streamlined structure with large middle and small ends, the middle large part is beneficial to the holding of the user's hand, the shell is ergonomic, the holding hand feels comfortable, the size is small, single-handed operation can be realized during clinical use, and the other hand can be used for image guiding operation, a long groove 32 for placing a firing button 13 is formed in one side of the middle position, a long slot hole 33 is formed in the groove, a through hole 31 is formed in one side wall of the groove for installing a tightening knob 20, and an anti-skid strip 34 is formed on the side opposite to the groove. The anti-skid strip is arranged on the firing button, which helps to increase friction during puncture, prevents slipping, and also enhances the grip feeling, so that it is more labor-saving to use, the contact surface with the fingers meets the ergonomic design, and it is more convenient to push during use. The shell forming process of the utility model can adopt high molecular plastic injection molding and then be sleeved on the inner shell or be injection molded on the inner shell.
[0038] The puncture needle 9 is provided with a scale mark 35 on the body for position marking and recording during surgical penetration, and the puncture needle 9 is provided with a puncture needle tip 36 at the end, the puncture needle tip 36 is provided with different angle blades in front and back, the sharpness of the puncture needle 9 is increased, and the puncture needle 9 is convenient for penetrating into breast tissue during the surgical process. The surgical process does not need to be matched with the rest of the puncture tool, and the surgical puncture can be directly performed, which is convenient for intraoperative operation and reduces the surgical cost. The guide needle is provided with a beveled opening at the rear end, which is beneficial to the pushing out of the needle during assembly.
[0039] The working process of the utility model is as follows:
[0040] 1. Prepare the part to be positioned and marked according to the requirements, and give enough anesthetic according to the requirements;
[0041] 2. Remove the product packaging and take out the marker product;
[0042] 3. If necessary, loosen the locking knob, push the tail push rod according to the lesion position of the patient to adjust the working length of the pusher puncture needle, and then lock the locking knob after adjustment;
[0043] 4. Position the target area by using appropriate imaging technology;
[0044] 5. Insert the puncture needle into the breast tissue and guide it to the target area. Refer to the scale mark on the outer tube of the puncture needle to place the needle tip to exactly contact the target;
[0045] 6. Push the firing button forward to release the marker until a firm click sound is heard or felt and the button is locked in place;
[0046] 7. After release, withdraw the pusher shell (handle).
[0047] The specific embodiments described herein are merely illustrative of the principles of the present application and its efficacy, and are not intended to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed by the present application shall be covered by the claims of the present application.
Claims
1. An adjustable marker pusher device comprising an outer shell and an inner shell, the inner shell enclosing a pusher therein, characterized in that: The inner shell is composed of an upper inner shell and a lower inner shell, a strip-shaped guide rail for placing the pusher is formed in the lower inner shell, the strip-shaped guide rail can limit the rotation of the pusher, a limiting groove is formed at the front end of the strip-shaped guide rail, a guide sleeve is installed in the limiting groove, the end of the pusher passes through the guide sleeve and is placed in the strip-shaped guide rail, then the upper inner shell is used to cover the pusher, an outer shell is arranged on the outer sleeve to form a complete push device, and a protective sleeve is arranged at the front end of the guide sleeve and the end of the pusher.
2. The adjustable marker push device of claim 1, wherein: The push device is composed of a puncture needle assembly and a trigger, the puncture needle assembly is composed of a push base, a puncture needle and a push rod, the front end of the push base is connected with the puncture needle through an outer needle base, the puncture needle is sleeved with a guide sleeve, and the rear tail is provided with the push rod, a recess is formed on the push base near the front end, the trigger is installed in the recess, and an adjusting limiting device is further arranged on the push base to facilitate the adjustment of the initial length of the puncture needle.
3. The adjustable marker push device of claim 2, wherein: The trigger is composed of a trigger button, an inner needle base and a push-out needle, the push-out needle is installed at the front of the inner needle base and is inserted into the puncture needle, the trigger button is installed above the inner needle base, and spring sheets are further installed on both sides of the inner needle base, the recess in the push base is provided with symmetrically arranged clamping grooves in front and back, the spring sheets are installed in the rear clamping grooves, when the trigger button is pushed, the spring sheets are drawn out of the rear clamping grooves and are moved to the front clamping grooves, and a sound is emitted after the spring sheets are moved to the front clamping grooves, that is, the trigger is completed, and the rear of the recess is provided with an adjusting limiting device.
4. The adjustable marker push device of claim 2 or 3, wherein: The limiting device is a tight knob and a limiting block, the tight knob is installed in a long strip-shaped knob groove formed on the side of the push base, the limiting block is installed on an adjusting handle arranged between the rear of the push base and the push rod, threads are arranged on the adjusting handle, the limiting block is screwed on the adjusting handle with threads, and a scale is marked on the adjusting handle to facilitate the checking of the adjusting size.
5. The adjustable marker push device of claim 4, wherein: The guide sleeve is composed of a limiting sheet, a clamping seat and a guide head, through holes are formed in the limiting sheet, the clamping seat and the guide head for inserting the puncture needle, the limiting sheet is inserted between the limiting groove and the top of the upper shell and the lower shell, the clamping seat is clamped into the limiting groove and is positioned by a positioning hole formed in the limiting groove and a positioning column arranged below the clamping seat, the guide head is arranged in front of the clamping seat and is placed in the through hole formed in front of the upper inner shell and the lower inner shell, part of the end of the guide head is exposed outside the outer shell, and a protective sleeve is sleeved on the guide head exposed outside the outer shell.
6. The adjustable marker push device of claim 5, wherein: The outer shell has a streamlined structure with large middle and small ends, the thick middle part is beneficial to the holding of the hands of the user, the handle shell is ergonomic, a long strip-shaped recess for placing the trigger button is formed in one side of the middle position, a long strip-shaped slot hole is formed in the recess, a through hole is formed in one side wall of the recess for installing the tight knob, and an anti-skid strip is formed on the side opposite to the recess.
7. The adjustable marker push device of claim 5, wherein: A scale mark is arranged on the body of the puncture needle tube for marking and recording the position in the process of surgery, a puncture needle tip is arranged at the front end of the puncture needle, and the puncture needle tip is provided with front and back angle different angle blades to increase the sharpness of the puncture needle.