CN217015015U - Catheter sheath and interventional medical appliance - Google Patents
Catheter sheath and interventional medical appliance Download PDFInfo
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- CN217015015U CN217015015U CN202121180530.0U CN202121180530U CN217015015U CN 217015015 U CN217015015 U CN 217015015U CN 202121180530 U CN202121180530 U CN 202121180530U CN 217015015 U CN217015015 U CN 217015015U
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- sheath
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- catheter
- inner sheath
- outer sheath
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Abstract
The utility model provides a catheter sheath and an interventional medical appliance, wherein the catheter sheath comprises: the inner sheath is inserted into the outer sheath, a clamping groove is formed in the inner sheath wall of the holding part of the outer sheath, an elastic clamping piece is arranged on the outer sheath wall of the inner sheath and comprises a clamping end and a pressing end, the clamping end is clamped into the clamping groove to fix the inner sheath relative to the outer sheath, and the pressing end is used for extending out of the holding part; a user can press the pressing end to enable the buckle end to exit the buckle groove, and the fixed state between the inner sheath and the outer sheath is released; the user releases the pressing end, and the buckling end can be clamped into the buckling groove under the self elastic action; the interventional medical device comprises the catheter sheath; through adopting above-mentioned technical scheme, buckle spare includes buckle end and presses the end, and the user presses down to press the end and can remove the fixed state between inner sheath and the epitheca, has realized that the user singlehanded removes buckle between them and connects, and the simple operation has improved user's use and has experienced.
Description
Technical Field
The utility model relates to the technical field of interventional medical treatment, in particular to a catheter sheath and an interventional medical appliance.
Background
In the existing interventional medical treatment, liquid and instruments are placed in the blood vessel, the liver and gall bladder or the peripheral field by using a catheter pin, an inner sheath and an outer sheath of an existing catheter sheath are in tight fit connection through a buckle, and a relatively large buckling force is generated by the buckle structure to maintain the relative fixation between the inner sheath and the outer sheath.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a catheter sheath and an interventional medical device, and aims to solve the technical problems that the operation of pulling out an inner sheath of the catheter sheath is complex and inconvenient in the prior art.
In order to achieve the purpose, the technical scheme adopted by the utility model is that the catheter sheath comprises an inner sheath and an outer sheath, wherein the inner sheath is inserted into the outer sheath, the outer sheath is provided with a holding part which is kept outside the body surface of a patient, the inner sheath wall of the holding part of the outer sheath is provided with a clamping groove, the outer sheath wall of the inner sheath is provided with an elastic clamping part, the clamping part comprises a clamping end and a pressing end, the clamping end is clamped into the clamping groove to fix the inner sheath relative to the outer sheath, and the pressing end is used for extending out of the holding part; a user can press the pressing end to enable the buckling end to exit from the buckling groove, and the fixed state between the inner sheath and the outer sheath is released; the user releases the pressing end, and the buckling end can be clamped into the buckling groove under the elastic action of the buckling end.
By adopting the technical scheme, the clamping end on the outer sheath wall of the inner sheath can be clamped into the clamping groove on the inner sheath wall of the outer sheath under the elastic action of the clamping part, so that the fixed connection of the inner sheath and the outer sheath is realized, and the fixed connection mode is simple and reliable; in addition, the buckle piece comprises a buckle end and a pressing end, a user can release the fixed state between the inner sheath and the outer sheath by pressing the pressing end, the buckle connection between the inner sheath and the outer sheath can be released by one hand of the user, the operation is convenient, and the use experience of the user is improved.
In one embodiment, the snap end is provided with a guide portion disposed obliquely in an insertion direction of the inner sheath.
Specifically, the inner sheath is in clearance fit with the outer sheath, the outer diameter of the inner sheath is slightly smaller than the inner diameter of the outer sheath, when the inner sheath is inserted into the outer sheath, the clamping end abuts against one end of the holding portion of the outer sheath, a user continues to insert the inner sheath, the clamping end is extruded by the inner sheath wall of the outer sheath to deform, and therefore the clamping end contracts towards the direction close to the center of the inner sheath until the inner sheath is completely inserted, and the clamping end is clamped into the clamping groove.
Through adopting above-mentioned technical scheme, the guide part that the slope set up can be so that the inner sheath inserts the sheath easier, improves user's simple operation nature.
In one embodiment, the fastening end is provided with a fastening part connected with a groove wall of the fastening groove in the pulling direction of the inner sheath.
Specifically, when the inner sheath is completely inserted into the outer sheath, the buckling end is clamped into the buckling groove, and the inner sheath is fixed relative to the outer sheath by utilizing the friction force generated by the connection of the buckling part and the groove wall of the buckling groove.
In a detailed manner, the wall of the locking groove is perpendicular to the insertion direction of the inner sheath, and the surface of the locking portion contacting the locking groove is also perpendicular to the insertion direction of the inner sheath.
Through adopting above-mentioned technical scheme, be equipped with the buckle portion that meets with the cell wall in buckle groove on the buckle end, stability when having improved buckle end buckle.
In one embodiment, a guide groove opposite to the buckling groove is formed in an inner sheath wall of the holding portion of the outer sheath, and a guide column matched with the guide groove is formed in an outer sheath wall of the inner sheath.
Specifically, the shape and size of the guide groove are inconsistent with those of the buckling groove, the guide column is in clearance fit with the guide groove, and the guide column can be just inserted into the guide groove.
By adopting the technical scheme, the guide groove and the clamping groove are oppositely arranged, the shapes and the sizes of the guide groove and the clamping groove are not consistent, a user can easily distinguish and insert the guide column into the guide groove, after the guide column and the guide groove are successfully positioned, the clamping groove oppositely arranged with the guide groove is successfully positioned with the clamping piece, the convenience of inserting the inner sheath into the outer sheath is improved, meanwhile, the guide column and the clamping piece can limit the inner sheath to rotate in the outer sheath, and the stability of the inner sheath is improved.
In one embodiment, the outer sheath comprises a first sheath body, a second sheath body and a third sheath body, wherein the second sheath body is inserted into the first sheath body, and the third sheath body is covered on the second sheath body.
Specifically, the first sheath body fixes the second sheath body, which is required to have high mechanical strength in material, and is used for insertion into the body of a patient, which is required to have high sterility in material and is expensive, and the third sheath body fixes the inner sheath, which is required to have durability in material.
By adopting the technical scheme, the outer sheath is divided into the first sheath body, the second sheath body and the third sheath body, so that the manufacturing cost can be effectively reduced, and meanwhile, the durability is improved; of course, the first sheath, the second sheath and the third sheath may be integrally formed.
In one embodiment, the first sheath body is provided with a fixing piece for fixedly connecting with other components.
Specifically, the fixing piece is provided with a fixing hole.
By adopting the technical scheme, the sheath is convenient for a user to fix, and the use convenience is improved.
In one embodiment, a baffle is convexly arranged on the second sheath body in a direction away from the center of the second sheath body, and the baffle is arranged opposite to the fastener.
Specifically, when the user wants to pull out the inner sheath, the thumb of the single hand presses the pressing end of the clamping piece, and the index finger of the single hand abuts against the baffle plate, so that the inner sheath can be pulled out.
Through adopting above-mentioned technical scheme, be equipped with the baffle on the second sheath body, the application of force point when increasing the user and pulling out the inner sheath for the inner sheath is pulled out more easily.
In one embodiment, a sealing plate is arranged between the second sheath body and the third sheath body, and the inner sheath is arranged in a sealing hole of the sealing plate in a penetrating mode.
In particular, the sealing patch serves to isolate the inner portion of the sheath from the outer portion of the sheath.
By adopting the technical scheme, when the inner sheath is pulled out of the outer sheath, the sealing hole is automatically closed, and the communication between the inside of the body of a patient and the external environment is prevented, so that the pollution is avoided.
In one embodiment, a sealing ring is arranged between the third sheath body and the sealing sheet.
By adopting the technical scheme, the sealing effect of the sheath is improved.
The embodiment also provides an interventional medical device, which comprises an interventional consumable and the catheter sheath, wherein the interventional consumable is connected with the catheter sheath.
Through adopting above-mentioned technical scheme, insert medical utensil and be used for blood vessel, liver and gall or peripheral field and place liquid and/or apparatus, its simple operation.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a perspective view of a catheter sheath provided in accordance with an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a catheter sheath provided by an embodiment of the present invention;
FIG. 3 is an enlarged view at "A" of FIG. 2;
FIG. 4 is an enlarged view of FIG. 2 "B";
fig. 5 is an exploded view of a catheter sheath provided by an embodiment of the present invention.
The various reference numbers in the figures are:
100-a catheter sheath;
1-inner sheath; 2-sheath; 3-a snap groove; 4-a fastener; 5-a guide groove; 6-a guide post; 7-a fixing piece; 8-a baffle plate; 9-sealing slice; 10-a sealing ring;
21-a first sheath; 22-a second sheath; 23-a third sheath; 41-snap end; 42-a pressing end; 71-a fixation hole;
411-a guide; 412-a snap-fit.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected or indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the utility model, and do not indicate that the device or component must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.
Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as indicating a number of technical features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The following describes specific implementations of the present invention in more detail with reference to specific embodiments:
as shown in fig. 1 to 3, a catheter sheath 100 according to an embodiment of the present invention includes an inner sheath 1 and an outer sheath 2, the inner sheath 1 is inserted into the outer sheath 2, the outer sheath 2 is provided with a holding portion that is left outside a patient body, a fastening groove 3 is formed on an inner sheath wall of the holding portion of the outer sheath 2, a fastening member 4 having elasticity is provided on an outer sheath wall of the inner sheath 1, the fastening member 4 includes a fastening end 41 and a pressing end 42, the fastening end 41 is used for being fastened into the fastening groove 3 to fix the inner sheath 1 relative to the outer sheath 2, and the pressing end 42 is used for extending out of the holding portion; the user can press the pressing end 42 to enable the buckling end 41 to exit from the buckling groove 3, and the fixed state between the inner sheath 1 and the outer sheath 2 is released; the user releases the pressing end 42 and the catching end 41 can be caught in the catching groove 3 by its own elasticity.
The working principle of the catheter sheath 100 provided by the embodiment is as follows:
the catheter sheath 100 is used for placing liquid and/or instruments in blood vessels, liver and gall or peripheral fields, and the inner sheath 1 is inserted into the outer sheath 2; the inner sheath 1 and the outer sheath 2 can be synchronously inserted into the body of a patient, or the inner sheath 1 and the outer sheath 2 are inserted into the outer sheath 2 and then the inner sheath 1 is inserted into the outer sheath 2; when the user intends to pull out the inner sheath 1, the user holds the inner sheath 1 with the thumb and the index finger of one hand, and presses down the pressing end 42 with the finger close to the pressing end 42, so that the locking end 41 is retreated from the locking groove 3, and the fixed state between the inner sheath 1 and the outer sheath 2 is released, and the inner sheath 1 can be smoothly pulled out.
By adopting the technical scheme, the clamping end 41 on the outer sheath wall of the inner sheath 1 can be clamped into the clamping groove 3 on the inner sheath wall of the outer sheath 2 under the elastic force action of the clamping piece 4, so that the fixed connection of the inner sheath 1 and the outer sheath 2 is realized, and the fixed connection mode is simple and reliable; in addition, the buckle 4 comprises a buckle end 41 and a pressing end 42, and a user can release the fixed state between the inner sheath 1 and the outer sheath 2 by pressing the pressing end 42, so that the buckle connection between the inner sheath 1 and the outer sheath 2 can be released by one hand of the user, the operation is convenient, and the use experience of the user is improved.
In one embodiment, the catching end 41 is provided with a guide 411 obliquely arranged in the insertion direction of the inner sheath 1.
Specifically, the inner sheath 1 is in clearance fit with the outer sheath 2, the outer diameter of the inner sheath 1 is slightly smaller than the inner diameter of the outer sheath 2, when the inner sheath 1 is inserted into the outer sheath 2, the fastening end 41 abuts against one end of the holding part of the outer sheath 2, a user continues to insert into the inner sheath 1, the fastening end 41 is extruded by the inner sheath wall of the outer sheath 2 to deform, so that the fastening end 41 contracts towards the direction close to the center of the inner sheath 1 until the inner sheath 1 is completely inserted, and the fastening end 41 is fastened into the fastening groove 3.
Through adopting above-mentioned technical scheme, the guide part 411 that the slope set up can make inner sheath 1 insert outer sheath 2 easier, improves user's simple operation nature.
In one embodiment, the locking end 41 is provided with a locking portion 412 which is connected to a groove wall of the locking groove 3 in the pulling direction of the inner sheath 1.
Specifically, after the inner sheath 1 is completely inserted into the outer sheath 2, the locking end 41 is locked into the locking groove 3, and the inner sheath 1 is fixed to the outer sheath 2 by the frictional force generated by the locking part 412 contacting with the groove wall of the locking groove 3.
In a detailed manner, the groove wall of the catching groove 3 is perpendicular to the insertion direction of the inner sheath 1, and the surface of the catching portion 412 contacting the catching groove 3 is also perpendicular to the insertion direction of the inner sheath 1.
By adopting the above technical scheme, the buckling part 412 connected with the groove wall of the buckling groove 3 is arranged on the buckling end 41, so that the stability of the buckling end 41 during buckling is improved.
As shown in fig. 4, in one embodiment, the inner sheath wall of the grip portion of the outer sheath 2 is provided with a guide groove 5 facing the engagement groove 3, and the outer sheath wall of the inner sheath 1 is provided with a guide post 6 engaged with the guide groove 5.
Specifically, the guide groove 5 and the locking groove 3 are not identical in shape and size, the guide post 6 is in clearance fit with the guide groove 5, and the guide post 6 can be just inserted into the guide groove 5.
Through adopting above-mentioned technical scheme, guide way 5 sets up with buckle groove 3 relatively, and shape and size between them is inconsistent, the user can distinguish easily and insert guide post 6 in guide way 5, after guide post 6 and guide way 5 location succeed, buckle groove 3 with the relative setting of guide way 5 also with buckle 4 location succeed, improve the convenience that the user inserts interior sheath 1 in epitheca 2, guide post 6 and buckle 4 can restrict interior sheath 1 and take place to rotate in epitheca 2 simultaneously, improve the stability of interior sheath 1.
As shown in fig. 2 and 5, in one embodiment, the outer sheath 2 includes a first sheath 21, a second sheath 22 and a third sheath 23, the second sheath 22 is inserted into the first sheath 21, and the third sheath 23 is covered on the second sheath 22.
Specifically, the first sheath 21 fixes the second sheath 22, which is required to have high mechanical strength as a material, while the second sheath 22 is used for insertion into the body of a patient, which is required to have high sterility and is expensive, and the third sheath 23 is used for fixing the inner sheath 1, which is required to have durability as a material; the second sheath 22 and the third sheath 23 form a grip portion of the outer sheath 2.
By adopting the technical scheme, the sheath 2 is divided into the first sheath 21, the second sheath 22 and the third sheath 23, so that the manufacturing cost can be effectively reduced, and meanwhile, the durability is improved; of course, the first sheath 21, the second sheath 22, and the third sheath 23 may be integrally formed.
In one embodiment, the first sheath 21 is provided with a fixing member 7 for fixedly connecting with other components.
Specifically, the fixing member 7 is provided with a fixing hole 71.
By adopting the technical scheme, the sheath 2 is convenient for a user to fix, and the use convenience is improved.
In one embodiment, the second sheath 22 is provided with a baffle 8 protruding in a direction away from the center of the second sheath 22, and the baffle 8 is disposed opposite to the fastener 4.
Specifically, when the user wants to pull out the inner sheath 1, the thumb of one hand presses the pressing end 42 of the latch 4, and the forefinger of one hand abuts against the baffle 8, so that the inner sheath 1 can be pulled out.
Through adopting above-mentioned technical scheme, be equipped with baffle 8 on second sheath body 22, increase the application of force point when the user pulls out inner sheath 1 for inner sheath 1 pulls out more easily.
In one embodiment, a sealing sheet 9 is arranged between the second sheath 22 and the third sheath 23, and the inner sheath 1 is arranged in a sealing hole of the sealing sheet 9 in a penetrating mode.
In particular, the sealing disc 9 serves to isolate the inside of the sheath 2 from the outside of the sheath 2.
By adopting the technical scheme, when the inner sheath 1 is pulled out from the outer sheath 2, the sealing hole is automatically closed, so that the communication between the inside of the body of a patient and the external environment is prevented, and the pollution is prevented.
In one embodiment, a sealing ring 10 is provided between the third sheath 23 and the sealing plate 9.
By adopting the technical scheme, the sealing effect of the sheath 2 is improved.
The present embodiment further provides an interventional medical device, which includes an interventional consumable and the catheter sheath 100, wherein the interventional consumable is connected to the catheter sheath 100.
Through adopting above-mentioned technical scheme, insert medical utensil and be used for blood vessel, liver and gall or peripheral field to place liquid and/or apparatus, its simple operation.
The above description is only a preferred embodiment of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A catheter sheath comprises an inner sheath and an outer sheath, wherein the inner sheath is inserted into the outer sheath, the outer sheath is provided with a holding part which is kept outside the body surface of a patient, and the catheter sheath is characterized in that the inner sheath wall of the holding part of the outer sheath is provided with a clamping groove, the outer sheath wall of the inner sheath is provided with an elastic clamping part, the clamping part comprises a clamping end and a pressing end, the clamping end is clamped into the clamping groove to fix the inner sheath relative to the outer sheath, and the pressing end is used for extending out of the holding part; a user can press the pressing end to enable the buckling end to exit from the buckling groove, and the fixed state between the inner sheath and the outer sheath is released; the user releases the pressing end, and the buckling end can be clamped into the buckling groove under the elastic action of the buckling end.
2. The catheter sheath of claim 1, wherein the snap end is provided with a guide portion disposed obliquely in an insertion direction of the inner sheath.
3. The catheter sheath according to claim 1, wherein the catching end is provided with a catching portion which is in contact with a groove wall of the catching groove in an extracting direction of the inner sheath.
4. The catheter sheath of claim 1, wherein the inner sheath wall of the gripping portion of the outer sheath is provided with a guide groove opposite to the catching groove, and the outer sheath wall of the inner sheath is provided with a guide post engaged with the guide groove.
5. The catheter sheath of any one of claims 1 to 4, wherein the outer sheath comprises a first sheath body, a second sheath body inserted into the first sheath body, and a third sheath body covering the second sheath body.
6. The catheter sheath of claim 5, wherein the first sheath body is provided with a fixing member for fixing connection with other components.
7. The catheter sheath of claim 5, wherein the second sheath body is provided with a baffle protruding in a direction away from the center of the second sheath body, and the baffle is opposite to the fastener.
8. The catheter sheath of claim 5, wherein a sealing plate is disposed between the second sheath body and the third sheath body, and the inner sheath is disposed through a sealing hole of the sealing plate.
9. The catheter sheath of claim 8, wherein a sealing ring is disposed between the third sheath body and the sealing flap.
10. An interventional medical device comprising an interventional consumable and a catheter sheath of any one of claims 1 to 9, the interventional consumable being connected to the catheter sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121180530.0U CN217015015U (en) | 2021-05-28 | 2021-05-28 | Catheter sheath and interventional medical appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121180530.0U CN217015015U (en) | 2021-05-28 | 2021-05-28 | Catheter sheath and interventional medical appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217015015U true CN217015015U (en) | 2022-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121180530.0U Active CN217015015U (en) | 2021-05-28 | 2021-05-28 | Catheter sheath and interventional medical appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217015015U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115192857A (en) * | 2022-07-30 | 2022-10-18 | 上海泰佑医疗器械有限公司 | High-strength radiography catheter device |
-
2021
- 2021-05-28 CN CN202121180530.0U patent/CN217015015U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115192857A (en) * | 2022-07-30 | 2022-10-18 | 上海泰佑医疗器械有限公司 | High-strength radiography catheter device |
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