CN115253016B - Catheter sheath capable of being regulated and controlled bidirectionally - Google Patents
Catheter sheath capable of being regulated and controlled bidirectionally Download PDFInfo
- Publication number
- CN115253016B CN115253016B CN202210811417.0A CN202210811417A CN115253016B CN 115253016 B CN115253016 B CN 115253016B CN 202210811417 A CN202210811417 A CN 202210811417A CN 115253016 B CN115253016 B CN 115253016B
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- sheath
- catheter
- head
- electromagnet
- catheter sheath
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 32
- 230000001276 controlling effect Effects 0.000 claims abstract description 22
- 238000000926 separation method Methods 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 239000003146 anticoagulant agent Substances 0.000 claims description 3
- 229940127219 anticoagulant drug Drugs 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 210000004204 blood vessel Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/0045—Catheters; Hollow probes characterised by structural features multi-layered, e.g. coated
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/0054—Catheters; Hollow probes characterised by structural features with regions for increasing flexibility
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M25/0127—Magnetic means; Magnetic markers
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention discloses a catheter sheath capable of being regulated and controlled in two directions, which comprises: an interface component is arranged at one end of the catheter sheath main body; at least one split sheath body, a positioning assembly is arranged between the split sheath body and one end of the catheter sheath body, which is far away from the interface assembly; the sheath head and one end of the separation type sheath body, which is far away from the catheter sheath body, are provided with an external regulating and controlling component; wherein, the outer regulating and controlling component can regulate the deflection and deflection angle of the sheath head relative to the split sheath body; wherein, be provided with interior regulation and control subassembly in the sheath head, interior regulation and control subassembly can finely tune the deflection and the declination of the pipe that stretches into in the catheter sheath main part.
Description
Technical Field
The invention relates to the technical field of catheter sheaths, in particular to a catheter sheath capable of being regulated and controlled in two directions.
Background
The catheter sheath often comprises an expansion tube and a sheath tube, the expansion tube is arranged in the sheath tube, the expansion tube and the sheath tube are inserted into a blood vessel together, then the expansion tube is pulled out, the catheter can be guided through the catheter sheath, the damage to the blood vessel is reduced when the catheter is in or out, but the existing catheter sheath is simpler in structure, poor in functionality and capable of effectively adjusting the catheter, and the catheter sheath can be driven to slide when the catheter is in or out, so that the comfort is general.
Accordingly, there is a need to provide a bi-directionally controllable catheter sheath that addresses the above-described issues.
Disclosure of Invention
In order to achieve the above purpose, the present invention provides the following technical solutions: a bi-directionally controllable catheter sheath, comprising:
an interface component is arranged at one end of the catheter sheath main body;
at least one split sheath body, a positioning assembly is arranged between the split sheath body and one end of the catheter sheath body, which is far away from the interface assembly; and
an external regulating and controlling component is arranged between the sheath head and one end of the separation type sheath body, which is far away from the catheter sheath body;
wherein, the outer regulating and controlling component can regulate the deflection and deflection angle of the sheath head relative to the split sheath body;
wherein, be provided with interior regulation and control subassembly in the sheath head, interior regulation and control subassembly can finely tune the deflection and the declination of the pipe that stretches into in the catheter sheath main part.
Further, preferably, the positioning assembly comprises an electromagnet I, an electromagnet II and at least two positioning arc sheets which are symmetrically arranged, wherein the electromagnet I is embedded in the catheter sheath body, the electromagnet II is embedded in the separation type sheath body, and the positioning arc sheets are connected between the catheter sheath body and the separation type sheath body.
Further, preferably, the catheter sheath further comprises a first sealing film of an annular structure, which is made of flexible materials, and is connected between the separation sheath body and the catheter sheath body.
Further, as the preference, still include at least one spacing section of thick bamboo, spacing section of thick bamboo is fixed in the one end that the catheter sheath main part kept away from the interface subassembly, slide in the spacing section of thick bamboo and be provided with T type gag lever post, and under the initial state, electro-magnet one and electro-magnet two control T type gag lever post slide to the right-hand member of spacing section of thick bamboo, and the radial outwards is the arc of location arc piece this moment.
Further, as an preference, the outer regulating and controlling assembly comprises an electromagnet III, an electromagnet IV and at least two elastic telescopic columns which are symmetrically arranged, wherein the electromagnet III is embedded in the separated sheath body, the electromagnet IV is embedded in the sheath head, and the elastic telescopic columns are connected between the separated sheath body and the sheath head.
Further, preferably, the sheath further comprises a second sealing film with an annular structure, which is made of flexible material and is connected between the sheath head and the separation type sheath body.
Further, as the preference, interior regulation and control subassembly includes outer spacing ring, and its fixed embedding is inboard in the tip of sheath head, one side that outer spacing ring is close to the catheter sheath main part be provided with the axial slip set up in the inboard grip ring of sheath head, the outer wall of grip ring is provided with the flexible ring, and the inner wall is fixed with the ring pad, one side that the grip ring is close to the catheter sheath main part adopts spring coupling to have interior spacing ring, interior spacing ring is fixed in the inboard of sheath head, and in the initial stage, the grip ring supports under spring drive in the side of outer spacing ring.
Further, preferably, the clamping ring is symmetrically connected with a rope body, the other end of the rope body is connected to the output end of a magnetostrictor, and the magnetostrictor is horizontally embedded in the inner wall of the sheath head.
Further, preferably, the sheath head is provided with a developing ring.
Further, preferably, an anticoagulant coating is provided on the inner wall and/or the outer wall of the catheter sheath body, the split sheath body and the sheath head.
Compared with the prior art, the invention provides a catheter sheath capable of being regulated and controlled bidirectionally, which has the following beneficial effects:
in the embodiment of the invention, the outer regulating and controlling assembly is arranged, and the deflection angle of the sheath head can be regulated, so that the catheter sheath main body, the split type sheath body and the sheath head can be smoothly put into a patient, then the positioning assembly can be used for positioning the catheter sheath main body, so that the catheter sheath main body is prevented from shaking, discomfort of the patient is reduced, and finally, when the catheter is put into the catheter, the deflection and the deflection angle of the catheter can be finely regulated again by the inner regulating and controlling assembly after the catheter main body, the split type sheath body and the sheath head are guided to reach a specified position, so that the flexibility of the catheter is improved, and the catheter can work in a specified range more accurately.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a bi-directionally controllable catheter sheath;
FIG. 2 is a schematic diagram of a positioning assembly and an external control assembly in a bi-directionally controllable catheter sheath;
FIG. 3 is a schematic diagram of the structure of an internal control assembly in a bi-directionally controllable catheter sheath;
in the figure: 1. a catheter sheath body; 2. an interface assembly; 3. a split sheath; 4. a sheath head; 5. a positioning assembly; 6. an external control assembly; 7. a through hole; 8. an inner regulatory component; 51. sealing a first film; 52. an electromagnet I; 53. an electromagnet II; 54. positioning the arc piece; 55. a limiting cylinder; 56. a T-shaped limit rod; 61. sealing a second film; 62. an electromagnet III; 63. an electromagnet IV; 64. an elastic telescopic column; 81. an outer limit ring; 82. a clamping ring; 83. a ring pad; 84. a spring; 85. an inner limit ring; 86. a rope body; 87. a magnetostrictor.
Description of the embodiments
Referring to fig. 1 to 3, the present invention provides a catheter sheath capable of bidirectional regulation, comprising:
a catheter sheath body 1, one end of which is provided with an interface assembly 2;
at least one split sheath 3, a positioning assembly 5 is arranged between the split sheath and one end of the catheter sheath main body 1 far away from the interface assembly 2; and
an outer regulating and controlling component 6 is arranged between the sheath head 4 and one end of the separation sheath body 3 away from the catheter sheath body 1;
wherein the outer regulating and controlling component 6 can regulate the deflection and deflection angle of the sheath head 4 relative to the split sheath body 3;
wherein, an inner regulating and controlling component 8 is arranged in the sheath head 4, and the inner regulating and controlling component 8 can finely regulate the deflection and the deflection angle of the catheter extending into the catheter sheath main body 1.
That is, in this embodiment, on the one hand, the sheath head 4 can be adjusted, and on the other hand, the catheter can be adjusted by the internal adjusting and controlling component after reaching the designated position accurately under the guidance of the catheter sheath body, the split-type sheath body and the sheath head, so that the bidirectional adjustment and control of the catheter are realized, and the navigation accuracy is improved.
In this embodiment, as shown in fig. 2, the positioning assembly 5 includes an electromagnet 52, an electromagnet 53 and at least two positioning arc pieces 54 symmetrically disposed, wherein the electromagnet 52 is embedded in the catheter sheath body 1, the electromagnet 53 is embedded in the split-type sheath body 3, and the positioning arc pieces are connected between the catheter sheath body and the split-type sheath body 3.
The number of the positioning arc sheets is at least two, and the device can be positioned in a blood vessel through the two positioning arc sheets in a point contact type extrusion positioning mode;
in an alternative embodiment, the number of the positioning arc pieces is three, so that three-point positioning is realized, and of course, the number of the positioning arc pieces can be multiple, so that the positioning stability of the positioning arc pieces can be improved;
however, it should be noted that when the number of positioning segments is too large, the overall manufacturing cost increases, and clogging is liable to occur;
in order to improve the comfort of a patient, in the initial stage, a positioning arc piece is accommodated between the catheter sheath main body 1 and the separation type sheath body;
the outer surface of the positioning arc piece does not protrude from the outer surface of the catheter sheath body 1 and does not protrude from the outer surface of the separation type sheath body;
further, the outer diameters of the catheter sheath body 1, the split sheath body 3 and the sheath head 4 are the same;
further, the end of the sheath head 4 is bullet-shaped.
In a preferred embodiment, the catheter sheath further comprises a sealing film 51 of a ring structure, which is made of flexible material and is connected between the split sheath 3 and the catheter sheath body 1.
As a preferred embodiment, the catheter sheath further comprises at least one limiting cylinder 55, the limiting cylinder 55 is fixed at one end of the catheter sheath body 1 far away from the interface component 2, a T-shaped limiting rod 56 is slidably arranged in the limiting cylinder 55, and in an initial state, the electromagnet one and the electromagnet two control the T-shaped limiting rod 56 to slide to the rightmost end of the limiting cylinder, and at the moment, the positioning arc piece is radially outwards arc-shaped.
In this case, when the interval between the split sheath 3 and the catheter sheath body 1 is retracted, the positioning arc piece can protrude outward without protruding inward as envisaged.
In this embodiment, as shown in fig. 2, the outer adjusting and controlling assembly 6 includes an electromagnet three 62, an electromagnet four 63 and at least two elastic telescopic columns 64 symmetrically arranged, wherein the electromagnet three 62 is embedded in the split sheath 3, the electromagnet four 63 is embedded in the sheath head 4, and the elastic telescopic columns 64 are connected between the split sheath 3 and the sheath head 4.
Similarly, the number of the elastic telescopic columns 64 is at least two, the sheath head 4 can be deflected unidirectionally or bidirectionally through the two elastic telescopic columns 64, and when the sheath head is implemented, one elastic telescopic column 64 is contracted, and the other elastic telescopic column 65 is extended;
in an alternative embodiment, the number of the elastic telescopic columns can be multiple, so that the deflection multidirectional performance of the elastic telescopic columns can be improved;
however, it should be noted that when the number of the elastic telescopic columns is too large, the overall manufacturing cost is increased, which is also disadvantageous for adjustment and control.
As a preferred embodiment, the number of the elastic telescopic columns is four.
In a preferred embodiment, the sheath further comprises a second sealing film 61 of an annular structure, which is made of a flexible material and is connected between the sheath head and the split sheath body 3.
In this embodiment, as shown in fig. 3, the inner regulating component 8 includes an outer limiting ring 81 fixedly embedded in the inner side of the end of the sheath head 4, one side of the outer limiting ring 81, which is close to the catheter sheath body 1, is provided with a clamping ring 82 axially sliding and arranged on the inner side of the sheath head 4, the outer wall of the clamping ring 82 is provided with a flexible ring, the inner wall of the clamping ring is fixedly provided with a ring pad 83, one side of the clamping ring 82, which is close to the catheter sheath body 1, is connected with an inner limiting ring 85 by adopting a spring 84, the inner limiting ring 85 is fixed on the inner side of the sheath head 4, and in the initial stage, the clamping ring 82 abuts against the side surface of the outer limiting ring 81 under the driving of the spring.
Further, the clamping ring 82 is symmetrically connected with a rope 86, the other end of the rope 86 is connected to the output end of a magnetostrictor 87, and the magnetostrictor 87 is horizontally embedded in the inner wall of the sheath head 4.
It should be noted that the ring pad 83 can tightly wrap around the catheter, and the ring pad 83 can be inclined by pulling one of the ropes, so as to adjust the deflection and the deflection angle of the catheter.
As a preferred embodiment, the sheath head 4 is provided with a developing ring.
As a preferred embodiment, the inner wall and/or the outer wall of the catheter sheath body 1, the split sheath body 3 and the sheath head 4 are provided with an anticoagulant coating.
During implementation, the support tube is embedded in the catheter sheath main body, the catheter sheath main body is inserted, the deflection and the deflection angle of the sheath head 4 are regulated through the outer regulating and controlling assembly 6, so that the catheter sheath main body, the separated sheath body and the sheath head can be smoothly inserted into a patient, the positioning assembly 5 can be used for positioning the catheter sheath main body, shaking is prevented, discomfort of the patient is reduced, and finally, when the support tube is withdrawn and the catheter is inserted, the catheter can accurately reach a designated position under the guidance of the catheter sheath main body, the separated sheath body and the sheath head, and then the deflection and the deflection angle of the catheter are finely regulated again through the inner regulating and controlling assembly 8, so that the flexibility of the catheter is improved, and the catheter can work in a designated range more accurately.
The foregoing description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical solution of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
1. A catheter sheath capable of being regulated and controlled bidirectionally, which is characterized in that: comprising the following steps:
a catheter sheath body (1), one end of which is provided with an interface component (2);
at least one split sheath body (3), a positioning component (5) is arranged between the split sheath body and one end of the catheter sheath body (1) far away from the interface component (2); and
an external regulating and controlling component (6) is arranged between the sheath head (4) and one end of the separation type sheath body (3) far away from the catheter sheath main body (1);
wherein the outer regulating and controlling component (6) can regulate the deflection and deflection angle of the sheath head (4) relative to the separation type sheath body (3);
wherein an inner regulating and controlling component (8) is arranged in the sheath head (4), and the inner regulating and controlling component (8) can finely regulate the deflection and the deflection angle of a catheter which extends into the catheter sheath main body (1);
the positioning assembly (5) comprises an electromagnet I (52), an electromagnet II (53) and at least two symmetrically arranged positioning arc pieces (54), wherein the electromagnet I (52) is embedded in the catheter sheath main body (1), the electromagnet II (53) is embedded in the separation sheath body (3), and the positioning arc pieces are connected between the catheter sheath main body and the separation sheath body (3);
the outer regulating and controlling assembly (6) comprises an electromagnet III (62), an electromagnet IV (63) and at least two elastic telescopic columns (64) which are symmetrically arranged, wherein the electromagnet III (62) is embedded in the separated sheath body (3), the electromagnet IV (63) is embedded in the sheath head (4), and the elastic telescopic columns (64) are connected between the separated sheath body (3) and the sheath head (4);
the inner regulating and controlling assembly (8) comprises an outer limiting ring (81), the outer limiting ring is fixedly embedded into the inner side of the end part of the sheath head (4), a clamping ring (82) axially arranged on the inner side of the sheath head (4) in a sliding mode is arranged on one side, close to the sheath head (1), of the outer limiting ring (81), a flexible ring is arranged on the outer wall of the clamping ring (82), a ring pad (83) is fixedly arranged on the inner wall of the clamping ring (82), an inner limiting ring (85) is connected to one side, close to the sheath head (1), of the clamping ring (82) through a spring (84), the inner limiting ring (85) is fixed on the inner side of the sheath head (4), and in an initial stage, the clamping ring (82) abuts against the side face of the outer limiting ring (81) under the driving of the spring;
the clamping ring (82) is symmetrically connected with a rope body (86), the other end of the rope body (86) is connected to the output end of a magnetostrictor (87), and the magnetostrictor (87) is horizontally embedded into the inner wall of the sheath head (4).
2. The bi-directionally controllable catheter sheath of claim 1, wherein: the positioning assembly (5) further comprises a sealing film I (51) of an annular structure, which is made of flexible materials and is connected between the separation type sheath body (3) and the catheter sheath body (1).
3. The bi-directionally controllable catheter sheath of claim 1, wherein: the positioning assembly (5) further comprises at least one limiting cylinder (55), the limiting cylinder (55) is fixed at one end, far away from the interface assembly (2), of the catheter sheath main body (1), a T-shaped limiting rod (56) is arranged in the limiting cylinder (55) in a sliding mode, in an initial state, the electromagnet I and the electromagnet II control the T-shaped limiting rod (56) to slide to the rightmost end of the limiting cylinder, and at the moment, the positioning arc piece is outwards arc-shaped in the radial direction.
4. The bi-directionally controllable catheter sheath of claim 1, wherein: the outer regulating and controlling assembly (6) further comprises a sealing film II (61) with an annular structure, which is made of flexible materials and is connected between the sheath head and the separation type sheath body (3).
5. The bi-directionally controllable catheter sheath of claim 1, wherein: the sheath head (4) is provided with a developing ring.
6. The bi-directionally controllable catheter sheath of claim 1, wherein: an anticoagulant coating is arranged on the inner wall and/or the outer wall of the catheter sheath main body (1), the separation type sheath body (3) and the sheath head (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210811417.0A CN115253016B (en) | 2022-07-11 | 2022-07-11 | Catheter sheath capable of being regulated and controlled bidirectionally |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210811417.0A CN115253016B (en) | 2022-07-11 | 2022-07-11 | Catheter sheath capable of being regulated and controlled bidirectionally |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115253016A CN115253016A (en) | 2022-11-01 |
| CN115253016B true CN115253016B (en) | 2024-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210811417.0A Active CN115253016B (en) | 2022-07-11 | 2022-07-11 | Catheter sheath capable of being regulated and controlled bidirectionally |
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| Country | Link |
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| CN (1) | CN115253016B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103079629A (en) * | 2010-08-13 | 2013-05-01 | 导管治疗有限公司 | A catheter assembly with deflection size adjustability |
| CN103282074A (en) * | 2010-11-03 | 2013-09-04 | 比尔卡地亚股份有限公司 | Steerable endoluminal devices and methods |
| CN210673430U (en) * | 2018-09-14 | 2020-06-05 | 杭州堃博生物科技有限公司 | Bendable radio frequency ablation catheter |
| CN114555170A (en) * | 2019-10-01 | 2022-05-27 | 清流科技有限公司 | Introducer sheath and method of introducing the same |
| CN114642522A (en) * | 2020-12-18 | 2022-06-21 | 深圳市健心医疗科技有限公司 | Conveying device and conveying system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050234436A1 (en) * | 1999-07-14 | 2005-10-20 | Cardiofocus, Inc. | Methods of cardiac ablation in the vicinity of the right inferior pulmonary vein |
-
2022
- 2022-07-11 CN CN202210811417.0A patent/CN115253016B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103079629A (en) * | 2010-08-13 | 2013-05-01 | 导管治疗有限公司 | A catheter assembly with deflection size adjustability |
| CN103282074A (en) * | 2010-11-03 | 2013-09-04 | 比尔卡地亚股份有限公司 | Steerable endoluminal devices and methods |
| CN210673430U (en) * | 2018-09-14 | 2020-06-05 | 杭州堃博生物科技有限公司 | Bendable radio frequency ablation catheter |
| CN114555170A (en) * | 2019-10-01 | 2022-05-27 | 清流科技有限公司 | Introducer sheath and method of introducing the same |
| CN114642522A (en) * | 2020-12-18 | 2022-06-21 | 深圳市健心医疗科技有限公司 | Conveying device and conveying system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115253016A (en) | 2022-11-01 |
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