CN215306544U - Special auxiliary appliance for cerclage - Google Patents
Special auxiliary appliance for cerclage Download PDFInfo
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- CN215306544U CN215306544U CN202120089364.7U CN202120089364U CN215306544U CN 215306544 U CN215306544 U CN 215306544U CN 202120089364 U CN202120089364 U CN 202120089364U CN 215306544 U CN215306544 U CN 215306544U
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- inner sleeve
- lantern ring
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Abstract
The invention belongs to the field of medical instruments, and particularly relates to a special auxiliary appliance for cervical cerclage, which comprises an operating tube, a liquid feeding tube penetrating through the operating tube, a water bag connected to the front end of the liquid feeding tube, at least three forceps arms arranged in the operating tube, and a control piece for controlling the forceps arms to gather or unfold, wherein the forceps arms extend forwards out of the operating tube, the forceps arms gradually depart from the axis of the operating tube from back to front and unfold outwards in an umbrella rib shape, and forceps teeth are arranged at the front ends of the forceps arms towards the axis direction of the operating tube. This application adopts the design of control tube, at least three tong arms and water pocket have been designed in the set in the control tube to integrate each functional unit to a whole through ingenious design, not only practiced thrift in the space, it is also more convenient to operate simultaneously, probably need several people's operation originally, only need one or two medical personnel just can accomplish now, and operating space is big, the visibility is good, the operation is convenient, the error is few, the operation degree of difficulty greatly reduced, the operation success rate is high.
Description
Technical Field
The invention belongs to the field of medical instruments, and particularly relates to a special auxiliary appliance for cervical cerclage.
Background
For some women with cervical insufficiency, such as those with the inner opening of the cervix expanding into a funnel or U-shaped change, especially for pregnant women with amniotic sac protruding out of the cervix, the cervix needs to be cerclaged, the existing cerclage is to push back the amniotic sac by a water sac for induction of labor and then expose the cervix by a forceps. The water ejecting sac is generally formed by clamping three or four cervical clamps at three or four point positions of the cervix, the clamps are gathered together to draw the cervix together, and the needle holder is put in again to suture and close the cervix. As the cervical clamps are too many and the needle holders are added, the cervical clamps have more instruments, limited space and few operation visual angles, thus causing inconvenient operation, long operation time, more operation errors and low cerclage efficiency.
Disclosure of Invention
The invention aims to provide an auxiliary appliance special for cervical cerclage, aiming at the problems.
The technical purpose of the invention is realized by the following technical scheme:
the utility model provides a special auxiliary implement of cervical cerclage, includes the control tube, wears to locate the interior liquid feed pipe of control tube, connect in the water pocket of liquid feed pipe front end, locate three at least tong arms in the control tube with be used for controlling the control that gathers together or expand between the tong arm, the tong arm stretches out forward the control tube, each deviate from gradually before by after between the tong arm the axle center of control tube outwards expandes and is the rib form, the tong arm front end is equipped with the tong tooth towards the axle center direction of control tube.
This application adopts the design of control tube, at least three tong arms and water pocket have been designed in the set in the control tube to integrate each functional unit to a whole through ingenious design, not only practiced thrift in the space, it is also more convenient to operate simultaneously, probably need several people's operation originally, only need one or two medical personnel just can accomplish now, and operating space is big, the visibility is good, the operation is convenient, the error is few, the operation degree of difficulty greatly reduced, the operation success rate is high.
Preferably, the control part comprises a lantern ring and an operating rod connected with the lantern ring and used for controlling the lantern ring to reciprocate along the length direction of the operating pipe, the operating pipe and the lantern ring are coaxially arranged or are arranged in parallel with each other on the axis, the lantern ring is sleeved outside the forceps arms and enables all the forceps arms to be gathered together when the lantern ring moves forwards under the pushing of the operating rod, the operating rod extends backwards and penetrates out of the rear end of the operating pipe, and the liquid feeding pipe penetrates through the lantern ring.
When the forceps are not tightly clamped, the forceps arms extend upwards from the operating tube and are bent outwards to be unfolded, the lantern ring is sleeved outside all the forceps arms, after the operating tube is inserted in place, the forceps arms are distributed around the cervix, and the water sac is sent to the cervix opening. The water sac is filled with water through the liquid feeding pipe, the water sac swells to push the amniotic sac on the cervical orifice back to the uterus, then when the control rod pushes upwards, the lantern ring gathers all abducted forceps arms inwards, so that after the forceps head clamps the cervix on the cervix, water in the water sac is discharged, then the water sac is extracted, the needle holder is used for suturing the cervix, and the forceps teeth can adopt the design of mouse teeth.
Preferably, the forceps arms are elastic forceps arms; or the outer side of the forceps arm is provided with a return spring which is positioned at the rear part of the lantern ring.
The design of the elastic forceps arms is more convenient, the space in the operation tube is saved, and the forceps arms always have outward-spreading tension so that the opening and closing of the forceps arms are controlled by the control rod. The opening and closing of the forceps arms can be realized by the design of the return spring, but the structural design is relatively complex, and the occupied space in the operation tube is relatively large.
Preferably, the rear end of the elastic clamp arm is fixedly connected to the inner wall surface of the operation pipe; or a positioning ring is arranged on the rear side of the lantern ring in the operating pipe, and the rear ends of all the forceps arms are connected to the positioning ring; or an inner sleeve is further arranged in the operating pipe, the rear ends of the forceps arms are connected to the front end of the inner sleeve, the rear end of the inner sleeve extends out of or is flush with the rear end of the operating pipe, and the lantern ring is arranged in front of the inner sleeve.
Preferably, when the operation pipe is internally provided with a positioning ring, the positioning ring is fixedly connected to the inner wall of the operation pipe or detachably arranged in the operation pipe, and the liquid sending pipe penetrates through the positioning ring.
The clamp arm can be directly fixed in the operating pipe; the clamp arm can be positioned on the positioning ring firstly and then is assembled with the first positioning ring and used in the operating pipe, and the positioning ring can be fixed in the operating pipe through welding, interference fit, buckle structures or structures of limiting steps.
Preferably, the operation tube comprises a small inner diameter section located at the front part and a large inner diameter section located at the rear part, a limiting step is formed between the large inner diameter section and the small inner diameter section, the outer diameter of the lantern ring is smaller than the inner diameter of the small inner diameter section, the outer diameter of the locating ring or the inner sleeve is larger than the inner diameter of the small inner diameter section, a groove seat step is arranged at the front end of the locating ring or the inner sleeve, and the lantern ring can be fittingly arranged on the groove seat step.
In addition, the forceps arms can be fixed on the inner sleeve and inserted into the operating tube from top to bottom along with the inner sleeve, and the lantern ring can also be arranged on the groove seat step and placed into the operating tube along with the inner sleeve, so that the components are easy to assemble and convenient to operate, and the forceps arms are also convenient to take and place. The operating pipe can be provided with a limiting step shape, so that the inner sleeve is limited, and the inner sleeve has a limiting position.
The application is not limited to the structure mode that the rear ends of the three clamp arms are connected, and the rear ends of the clamp arms can be kept not to lift when the clamp arms are braked by the up-and-down movement of the lantern ring.
Preferably, an inner sleeve is arranged in the operating tube, the rear end of the inner sleeve penetrates out of the operating tube, a ring-shaped end cover is arranged on the outer side of the penetrating part of the inner sleeve, the end cover can be buckled on the rear end edge of the operating tube, and the outer diameter of the end cover is larger than that of the rear end of the operating tube.
The end cover is arranged to enable the inner sleeve to be inserted into the operating pipe with a limited insertion depth, so that the inner sleeve can be conveniently disassembled and assembled, and the end cover can be buckled at the rear end of the operating pipe after the inner sleeve is directly inserted into the operating pipe. The end cover is safer, so that the thinner pipes are safer and more reliable in sleeving, hands are not easy to scratch, and the installation and sleeving are convenient. The assembled operating tube and the inner sleeve are an integral body which is not easy to separate, the stability is good, and the operation is convenient to carry out.
Preferably, at least two control rods are symmetrically connected to the lantern ring, the rear ends of all the control rods are connected through connecting rods, a guide groove is formed in the inner sleeve along the length direction of the inner sleeve, and the control rods are arranged in the guide groove. The stability of operating lever push-and-pull lantern ring time is guaranteed in the setting of guide way to make the lantern ring be difficult for wrench movement at the removal in-process, so that brake the tong arm steadily.
Preferably, the guide groove is formed by recessing the tube wall of the inner tube, that is, the control lever is disposed between the outer wall surface of the inner tube and the inner wall surface of the operation tube.
The mode that adopts foretell guide way centre gripping action bars both is convenient for process, and the part is few, and the centre gripping is stable simultaneously, and can insert the interior sleeve pipe in the action tube with interior sleeve pipe after the control spare is good with interior sleeve pipe cooperation earlier in the installation, and each part cooperation is compact after the equipment is good, and job stabilization, smooth and easy.
Preferably, the operating member includes an inner sleeve, the rear end of the forceps arm is connected to the front end of the inner sleeve, and the rear end of the inner sleeve extends out of the operating tube to form a push-pull portion.
The inner sleeve can be directly used as a control part, the forceps arms can be gathered or unfolded directly through the drawing of the inner sleeve in the operating tube and the matching of the front port of the operating tube, the forceps arms can move back and forth within the range of the operation requirement, and the forceps teeth can be clamped to the position of the cervix suitable for the operation.
Preferably, a plurality of clamping distance protrusions are sequentially arranged on the outer wall surface of the rear end of the inner sleeve along the length direction of the inner sleeve, a plurality of clamping distance grooves are formed in the operating pipe corresponding to the clamping distance protrusions, and the forceps teeth are mouse teeth.
The arrangement of the distance stopping protrusion and the distance clamping groove can position and control the depth of the inner sleeve penetrating into the operating tube so as to control the length of the forceps arm extending out of the operating tube, so that the requirements of different operations are met.
In conclusion, the invention has the following beneficial effects:
1. this application adopts the design of control tube, at least three tong arms and water pocket have been designed in the set in the control tube to integrate each functional unit to a whole through ingenious design, not only practiced thrift in the space, it is also more convenient to operate simultaneously, probably need several people's operation originally, only need one or two medical personnel just can accomplish now, and operating space is big, the visibility is good, the operation is convenient, the error is few, the operation degree of difficulty greatly reduced, the operation success rate is high. When the forceps are not tightly clamped, the forceps arms extend upwards from the operating tube and are bent outwards to be unfolded, the lantern ring is sleeved outside all the forceps arms, after the operating tube is inserted in place, the forceps arms are distributed around the cervix, and the water sac is sent to the cervix opening. The water sac is filled with water through the liquid feeding pipe, the water sac swells to push the amniotic sac on the cervical orifice back to the uterus, then when the control rod pushes upwards, the lantern ring gathers all abducted forceps arms inwards, so that after the forceps head clamps the cervix on the cervix, water in the water sac is discharged, then the water sac is extracted, the needle holder is used for suturing the cervix, and the forceps teeth can adopt the design of mouse teeth.
2. The surgical operation instrument is simple in structure, low in cost, convenient to operate and low in surgical risk.
Drawings
FIG. 1 is a schematic diagram of the present application showing the direct attachment of the jawarms to the inner arms of the operating tube.
Fig. 2 is a schematic diagram of the present application with the jawarms attached to the retaining ring.
Fig. 3 is a schematic of the structure of the present application with an inner sleeve and collar.
FIG. 4 is a schematic structural view of the eleventh embodiment.
FIG. 5 is a schematic diagram of the structure of the present application with finite levels.
Fig. 6 is a schematic structural diagram of the present application with a return spring.
Fig. 7 is a partial structural view of the present application with guide grooves.
FIG. 8 is a partial structural view of the present application with a pitch bump.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
The first embodiment is as follows:
the utility model provides a special auxiliary implement of cervical cerclage, includes control tube 1, wears to locate the intraductal liquid feed pipe 2 of control, connect in the water pocket 3 of liquid feed pipe front end, locate three at least tong arms 5 in the control tube and be used for controlling the control that gathers together or expand between the tong arm, the tong arm stretches out forward the control tube, each deviate from gradually before by after between the tong arm the axle center of control tube outwards expandes and is the rib form, the tong arm front end is equipped with latch 6 towards the axle center direction of control tube. The water sac can partially or completely extend out of the front end of the operating tube after being arranged in the operating tube, so that the amniotic sac can be pushed by the aid of the water filled in the rear part of the operating tube.
The arrangement of the forceps arms can be three, or four forceps point positions can be arranged like the traditional operation method, but the forceps arms can also achieve the effect of pulling the cervix to suture because the forceps arms are compact in structure and high in efficiency, and the forceps point positions are balanced. Of course, the number of the forceps arms can be selected according to actual individual difference and operation requirements.
Example two:
the difference from the above embodiment is that the control member includes a collar 41 and an operation rod 42 connected to the collar for controlling the collar to reciprocate along the length direction of the operation tube, the operation tube and the collar are coaxially arranged or arranged with the axis line parallel, the collar is sleeved outside the forceps arms and enables all the forceps arms to be gathered together when the collar moves forward under the pushing of the operation rod, the operation rod extends backward to penetrate through the rear end of the operation tube, and the liquid feeding tube passes through the collar.
When the forceps are not tightly clamped, the forceps arms extend upwards from the operating tube and are bent outwards to be unfolded, the lantern ring is sleeved outside all the forceps arms, after the operating tube is inserted in place, the forceps arms are distributed around the cervix, and the water sac is sent to the cervix opening. The water bag is filled with water through the liquid feeding pipe, the water bag is swelled to push the amniotic membrane bag 02 on the cervical orifice back to the uterus, then when the control rod pushes upwards, the lantern ring gathers all abducted forceps arms inwards, so that after the forceps head clamps the cervix 01, the water in the water bag is discharged, then the water bag is pulled out, the cervix is sutured by the needle holder, and the forceps teeth can adopt the design of mouse teeth.
Example three:
the difference from the above embodiments is that the jawarms are resilient jawarms. The design of the elastic forceps arms is more convenient, the space in the operation tube is saved, and the forceps arms always have outward-spreading tension so that the opening and closing of the forceps arms are controlled by the control rod.
Example four:
different from the embodiment, the outside of the forceps arm is provided with a return spring 7 which is positioned at the rear of the lantern ring. The opening and closing of the forceps arms can be realized by the design of the return spring, but the structural design is relatively complex, and the occupied space in the operation tube is relatively large.
Example five:
different from the embodiment, the rear end of the elastic clamp arm is fixedly connected to the inner wall surface of the operating pipe; or a positioning ring 8 is arranged on the rear side of the lantern ring in the operating pipe, and the rear ends of all the forceps arms are connected to the positioning ring; or an inner sleeve 9 is further arranged in the operating pipe, the rear ends of the forceps arms are connected to the front end of the inner sleeve, the rear end of the inner sleeve extends out of or is flush with the rear end of the operating pipe, and the lantern ring is arranged in front of the inner sleeve.
Example six:
different from the above embodiment, when the positioning ring is arranged in the operation tube, the positioning ring is fixedly connected to the inner wall of the operation tube or detachably arranged in the operation tube, and the liquid sending tube passes through the positioning ring.
The clamp arm can be directly fixed in the operating pipe; the clamp arm can be positioned on the positioning ring firstly and then is assembled with the first positioning ring and used in the operating pipe, and the positioning ring can be fixed in the operating pipe through welding, interference fit, buckle structures or structures of limiting steps.
Example seven:
different from the above embodiment, the operation tube includes a small inner diameter section located at the front portion and a large inner diameter section located at the rear portion, a limiting step 11 is formed between the large inner diameter section and the small inner diameter section, the outer diameter of the collar is smaller than the inner diameter of the small inner diameter section, the outer diameter of the positioning ring or the inner sleeve is larger than the inner diameter of the small inner diameter section, a groove seat step 411 is arranged at the front end of the positioning ring or the inner sleeve, and the collar is fittingly arranged on the groove seat step.
In addition, the forceps arms can be fixed on the inner sleeve and inserted into the operating tube from top to bottom along with the inner sleeve, and the lantern ring can also be arranged on the groove seat step and placed into the operating tube along with the inner sleeve, so that the components are easy to assemble and convenient to operate, and the forceps arms are also convenient to take and place. The operating pipe can be provided with a limiting step shape, so that the inner sleeve is limited, and the inner sleeve has a limiting position.
The application is not limited to the structure mode that the rear ends of the three clamp arms are connected, and the rear ends of the clamp arms can be kept not to lift when the clamp arms are braked by the up-and-down movement of the lantern ring.
Example eight:
different from the embodiment, the inner sleeve is arranged in the operating tube, the rear end of the inner sleeve penetrates out of the operating tube, a ring-shaped end cover 91 is arranged on the outer side of the penetrating part, the end cover can be buckled on the rear end edge of the operating tube, and the outer diameter of the end cover is larger than that of the rear end of the operating tube.
The end cover is arranged to enable the inner sleeve to be inserted into the operating pipe with a limited insertion depth, so that the inner sleeve can be conveniently disassembled and assembled, and the end cover can be buckled at the rear end of the operating pipe after the inner sleeve is directly inserted into the operating pipe. The end cover is safer, so that the thinner pipes are safer and more reliable in sleeving, hands are not easy to scratch, and the installation and sleeving are convenient. The assembled operating tube and the inner sleeve are an integral body which is not easy to separate, the stability is good, and the operation is convenient to carry out.
Example nine:
different from the above embodiment, at least two control rods are symmetrically connected to the collar, the rear ends of all the control rods are connected through a connecting rod 421, a guide groove 92 is formed in the inner sleeve along the length direction of the inner sleeve, and the control rods are arranged in the guide groove. The stability of operating lever push-and-pull lantern ring time is guaranteed in the setting of guide way to make the lantern ring be difficult for wrench movement at the removal in-process, so that brake the tong arm steadily.
Example ten:
different from the above embodiment, the guide groove is formed by recessing the tube wall of the inner tube, that is, the control rod is disposed between the outer wall surface of the inner tube and the inner wall surface of the operation tube.
The mode that adopts foretell guide way centre gripping action bars both is convenient for process, and the part is few, and the centre gripping is stable simultaneously, and can insert the interior sleeve pipe in the action tube with interior sleeve pipe after the control spare is good with interior sleeve pipe cooperation earlier in the installation, and each part cooperation is compact after the equipment is good, and job stabilization, smooth and easy.
Example eleven:
the difference from the above embodiment lies in that the operation member includes an inner sleeve 9, the rear end of the forceps arm is connected to the front end of the inner sleeve, and the rear end of the inner sleeve extends out of the operation tube to form a push-pull portion.
The inner sleeve can be directly used as a control part, the forceps arms can be gathered or unfolded directly through the drawing of the inner sleeve in the operating tube and the matching of the front port of the operating tube, the forceps arms can move back and forth within the range of the operation requirement, and the forceps teeth can be clamped to the position of the cervix suitable for the operation.
Example twelve:
different from the embodiment, the outer wall surface of the rear end of the inner sleeve is sequentially provided with a plurality of clamping distance protrusions 93 along the length direction of the inner sleeve, the operating pipe is provided with a plurality of clamping distance grooves 12 corresponding to the clamping distance protrusions, and the forceps teeth are mouse teeth.
The arrangement of the distance stopping protrusion and the distance clamping groove can position and control the depth of the inner sleeve penetrating into the operating tube so as to control the length of the forceps arm extending out of the operating tube, so that the requirements of different operations are met.
This application adopts the design of control tube, at least three tong arms and water pocket have been designed in the set in the control tube to integrate each functional unit to a whole through ingenious design, not only practiced thrift in the space, it is also more convenient to operate simultaneously, probably need several people's operation originally, only need one or two medical personnel just can accomplish now, and operating space is big, the visibility is good, the operation is convenient, the error is few, the operation degree of difficulty greatly reduced, the operation success rate is high.
Claims (10)
1. An auxiliary appliance special for cervical cerclage is characterized in that: including control tube (1), wear to locate liquid feed pipe (2) in the control tube, connect in water pocket (3) of liquid feed pipe front end, locate three at least tong arms (5) in the control tube and be used for controlling the control that gathers together or expand between the tong arm, the tong arm stretches out forward the control tube, each deviate from gradually before by after between the tong arm the axle center of control tube outwards expandes and is the rib form, the tong arm front end is equipped with tong teeth (6) towards the axle center direction of control tube.
2. The special auxiliary instrument for cervical cerclage according to claim 1, wherein: the control piece comprises a lantern ring (41) and an operating rod (42) connected with the lantern ring and used for controlling the lantern ring to reciprocate along the length direction of the operating pipe, the operating pipe and the lantern ring are coaxially arranged or are arranged in parallel with each other on the axis, the lantern ring is sleeved outside the forceps arms and can enable all the forceps arms to be gathered together when the lantern ring moves forwards under the pushing of the operating rod, the operating rod extends backwards and penetrates out of the rear end of the operating pipe, and the liquid feeding pipe penetrates through the lantern ring.
3. The special auxiliary instrument for cervical cerclage according to claim 2, wherein: the clamp arms are elastic clamp arms; or the outer side of the forceps arm is provided with a return spring (7), and the return spring is positioned behind the lantern ring.
4. The special auxiliary instrument for cervical cerclage according to claim 3, wherein: the rear end of the elastic clamp arm is fixedly connected to the inner wall surface of the operating pipe; or a positioning ring (8) is arranged on the rear side of the lantern ring in the operating pipe, and the rear ends of all the forceps arms are connected to the positioning ring; or an inner sleeve (9) is further arranged in the operating pipe, the rear ends of the forceps arms are connected to the front end of the inner sleeve, the rear end of the inner sleeve extends out of or is flush with the rear end of the operating pipe, and the lantern ring is arranged in front of the inner sleeve.
5. The special auxiliary instrument for cervical cerclage according to claim 4, wherein: the operating tube is including being located anterior little internal diameter section and the big internal diameter section that is located the rear portion, form spacing rank (11) between big, the little internal diameter section, the external diameter of the lantern ring is less than the internal diameter of little internal diameter section, holding ring or interior sheathed tube external diameter are greater than the internal diameter of little internal diameter section, holding ring or interior sheathed tube front end are equipped with groove seat rank (411), the lantern ring can locate with adaptation on the groove seat rank.
6. The special auxiliary instrument for cervical cerclage according to claim 4, wherein: the inner sleeve is arranged in the operating tube, the rear end of the inner sleeve penetrates out of the operating tube, a ring-shaped end cover (91) is arranged on the outer side of the penetrating part of the inner sleeve, the end cover can be buckled on the rear end edge of the operating tube, and the outer diameter of the end cover is larger than that of the rear end of the operating tube.
7. The special auxiliary instrument for cervical cerclage according to claim 6, wherein: at least two control rods are symmetrically connected to the lantern ring, the rear ends of all the control rods are connected through a connecting rod (421), a guide groove (92) is formed in the inner sleeve along the length direction of the inner sleeve, and the control rods are arranged in the guide groove.
8. The special auxiliary instrument for cervical cerclage according to claim 7, wherein: the guide groove is formed by the inward concave of the tube wall of the inner sleeve, namely the control rod is arranged between the outer wall surface of the inner sleeve and the inner wall surface of the operation tube.
9. The special auxiliary instrument for cervical cerclage according to claim 1, wherein: the operating part comprises an inner sleeve (9), the rear end of the forceps arm is connected to the front end of the inner sleeve, and the rear end of the inner sleeve extends out of the operating pipe to form a push-pull part.
10. The cervical cerclage aid according to any one of claims 6 to 9, wherein: the outer wall surface of the rear end of the inner sleeve is sequentially provided with a plurality of clamping distance protrusions (93) along the length direction of the inner sleeve, the operating pipe is provided with a plurality of clamping distance grooves (12) corresponding to the clamping distance protrusions, and the clamp teeth are mouse teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120089364.7U CN215306544U (en) | 2021-01-14 | 2021-01-14 | Special auxiliary appliance for cerclage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120089364.7U CN215306544U (en) | 2021-01-14 | 2021-01-14 | Special auxiliary appliance for cerclage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215306544U true CN215306544U (en) | 2021-12-28 |
Family
ID=79578592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120089364.7U Active CN215306544U (en) | 2021-01-14 | 2021-01-14 | Special auxiliary appliance for cerclage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215306544U (en) |
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2021
- 2021-01-14 CN CN202120089364.7U patent/CN215306544U/en active Active
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