CN219814985U - Ureter guiding sheath capable of adjusting bending - Google Patents
Ureter guiding sheath capable of adjusting bending Download PDFInfo
- Publication number
- CN219814985U CN219814985U CN202321229107.4U CN202321229107U CN219814985U CN 219814985 U CN219814985 U CN 219814985U CN 202321229107 U CN202321229107 U CN 202321229107U CN 219814985 U CN219814985 U CN 219814985U
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- China
- Prior art keywords
- sheath
- guide groove
- pipe
- tube
- rear end
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- 210000000626 ureter Anatomy 0.000 title claims abstract description 16
- 238000005452 bending Methods 0.000 title description 7
- 230000004927 fusion Effects 0.000 claims description 2
- 230000002146 bilateral effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 2
- 210000001635 urinary tract Anatomy 0.000 description 2
- 208000031868 Calculus ureteric Diseases 0.000 description 1
- 208000000014 Ureteral Calculi Diseases 0.000 description 1
- 238000002504 lithotomy Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 210000003708 urethra Anatomy 0.000 description 1
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Abstract
The utility model relates to the technical field of medical instruments, in particular to an adjustable ureteral guiding sheath. The utility model provides an adjustable ureter guiding sheath, includes sheath pipe, adjustable curved expansion pipe and joint, the inner chamber of sheath pipe and the inner chamber intercommunication of expansion pipe and joint, be equipped with in the sheath pipe lateral wall run through around and with the well guide slot of the inner chamber non-intercommunication of sheath pipe, well guide slot axis, the inner chamber axis, the sheath pipe axis parallel arrangement of sheath pipe, the joint is equipped with front end and well guide slot rear end intercommunication and rear end open-ended back guide slot, the expansion pipe is equipped with the guide slot before rear end and well guide slot front end intercommunication and front end and the inner chamber intercommunication of expansion pipe, preceding guide slot front end opening is seted up on the expansion pipe inner wall and is close to the expansion pipe rear end. The utility model has the advantages that the guide wire can not directly press human tissues when in use, and the use of other parts in the sheath tube can not be influenced, thereby being convenient to use.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to an adjustable ureteral guiding sheath.
Background
In performing urinary tract lithotomy, a ureteral sheath is used to create a passageway for endoscopic instruments to enter the urinary tract. By adopting the forward operation method, the ureter is guided by a guide wire through the urethra to expand the ureter in advance, the ureter sheath is pushed to a preset treatment position, the sheath tube is fixed, the expansion tube is taken down, and a ureter soft lens and other instruments are guided according to the operation requirement to perform operation or checking operation.
A penetrating groove in the center of the sheath tube is generally utilized for the guide wire to pass through, and then the guide wire passes through the expansion tube to enter a human body, so that the ureter is expanded; however, the guide wire occupies the inner space of the sheath, which is disadvantageous for other instruments to enter the sheath.
The chinese patent application No. 201810133234.1 discloses a ureter guiding sheath, comprising a sheath tube and an expansion tube, wherein the sheath tube is provided with a central channel, the expansion tube is provided with an extending part embedded in the central channel and an exposed extending part, the extending part adopts a flexible piece, and the extending part extends from a head end to a rear end to form a guide wire groove which is opened upwards for a guide wire to pass through in a pivoting manner; the guide wire groove is provided with an opening which is opened upwards so that the guide wire can be rapidly cut into or separated from the guide wire groove; the opening is provided with a flaring section and a narrow opening section communicated with the flaring section, and the narrow opening section extends from the head end of the expansion pipe; the head end of the sheath forms a stop ring at the junction of the sheath and the extension part to promote the separation of the guide wire groove and the guide wire, and the guide wire groove can enable the guide wire to enter to guide the sheath and the expansion tube to enter the cavity and be separated from the guide wire when the expansion tube is pulled out of the sheath.
According to the scheme, the guide wire groove is formed in the outer wall of the expansion pipe, so that occupation of the inner space of the sheath pipe is avoided; however, the guide wire groove is arranged on the outer wall of the expansion pipe, and when the expansion pipe is used, the guide wire occupies the space outside the guide wire groove, namely, human tissues can be pressed; meanwhile, the arrangement of the guide wire groove and the use of the guide wire can influence the bending of the expansion pipe, which is unfavorable for the normal use of the expansion pipe.
Disclosure of Invention
The utility model aims to provide an adjustable ureter guiding sheath which can not directly press human tissues when a guiding wire is used and can not influence the normal use of internal parts of a sheath.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an adjustable ureter guiding sheath, includes sheath pipe, adjustable curved expansion pipe and joint, sheath pipe one end is fixed with the expansion pipe, the sheath pipe other end is fixed with the joint, the inner chamber of sheath pipe and the inner chamber intercommunication of expansion pipe and joint, be equipped with in the sheath pipe lateral wall run through around and with the interior guide slot of the inner chamber non-intercommunication of sheath pipe, well guide slot axis, sheath pipe axis parallel arrangement, the joint is equipped with front end and well guide slot rear end intercommunication and rear end open-ended back guide slot, the expansion pipe is equipped with the front guide slot of rear end and well guide slot front end intercommunication and front end and expansion pipe's inner chamber intercommunication, front guide slot front end opening is seted up on the expansion pipe inner wall and is close to the expansion pipe rear end.
When the guide wire is needed to be used, the guide wire is inserted from a rear guide groove of the connector, and then the guide wire is moved, so that the guide wire sequentially passes through the middle guide groove and the front guide groove and then enters the human body; when the guide wire is not needed, the guide wire is pulled back so that the front end of the guide wire passes through the front guide groove and retreats into the middle guide groove. When the ureter guiding sheath is used, the guiding wire does not occupy the space of other parts positioned in the sheath tube; when other parts in the sheath tube are needed to be used, the guide wire can be retracted into the middle guide groove, and the guide wire does not need to be completely retracted so as to be convenient for the next use of the guide wire. Meanwhile, the guide wire passes through the inner cavity of the expansion tube, so that the guide wire can not press human tissues when in use, and the normal bending of the expansion tube is not influenced when in use.
Preferably, two middle guide grooves are formed in the sheath tube, two rear guide grooves are formed in the connector, two front guide grooves are formed in the expansion tube, the two middle guide grooves are symmetrically arranged left and right, and the front end and the rear end of each middle guide groove are connected with one front guide groove and one rear guide groove.
Namely, the two opposite sides of the ureter guiding sheath are provided with a hole and slot structure for a guide wire to pass through. When the ureteral guiding sheath is used, the ureteral guiding sheath does not need to be rotated or an operation assistant does not need to move, so that the ureteral guiding sheath is more convenient to use.
Preferably, the sheath tube is a bendable sheath tube, the connector is further provided with two stay rope guide grooves for a stay rope to pass through, each stay rope guide groove comprises a straight section groove parallel to the axis of the inner cavity of the connector, each rear guide groove is located between the two straight section grooves, each straight section groove is located between the two rear guide grooves, and four grooves formed by the two rear guide grooves and the two straight section grooves are arranged on the connector at annular uniform intervals. The above arrangement makes the exposed part of the guide wire and the stay cord operation part for controlling the bending of the sheath deviate from each other, and the arrangement is uniform, so that the ureter guiding sheath is convenient to use.
Preferably, the rear guide groove is provided on the inner wall of the joint, and the rear guide groove penetrates the rear end surface of the joint rearward. The rear guide groove is communicated with the inner cavity of the joint, so that the joint is convenient to process.
Preferably, the connector comprises a fixing part sleeved and connected on the outer side of the rear end of the sheath tube and a body positioned on the rear side of the fixing part, the inner diameter of the body is smaller than that of the fixing part, and the rear guide groove penetrates through the front end face of the body forwards. The fixing part is not sleeved inside the sheath tube, so that the middle guide groove is convenient to set and the guide wire passes through.
Preferably, the front end of the inner wall of the sheath tube is smoothly connected with the rear end of the inner wall of the expansion tube, the front end face of the sheath tube is connected with the rear end face of the expansion tube, and the sheath tube and the expansion tube are fixed in a fusion mode. In connection with the sheath and the stent, pins are inserted into the leading and trailing guide slots to facilitate pre-connection and positional alignment of the sheath and the stent. The rear end face of the expansion pipe is directly contacted with the front end face of the sheath pipe and is fused and fixed, and because the front guide groove and the middle guide groove are arranged, a structure which is sleeved with each other is not needed to be arranged between the expansion pipe and the sheath pipe, so that the manufacturing consumable of the expansion pipe is less, and the normal bending of the expansion pipe is facilitated.
The utility model has the advantages that the guide wire can not directly press human tissues when in use, and the use of other parts in the sheath tube can not be influenced, thereby being convenient to use.
Drawings
Fig. 1 is a cross-sectional view of the present utility model.
Fig. 2 is a cross-sectional view of a stent of the present utility model.
Fig. 3 is a schematic view of a structure of the joint and the pull rope of the present utility model.
Detailed Description
The utility model is further described below with reference to the drawings and specific embodiments.
As shown in fig. 1 to 3, this embodiment discloses an adjustable ureter guiding sheath, which comprises a sheath tube 1, an expansion tube 2 with adjustable bending and a joint 3, wherein the front end of the sheath tube 1 is fixed with the expansion tube 2, the rear end of the sheath tube 2 is fixed with the joint 3, and the inner cavity of the sheath tube 1 is communicated with the inner cavity of the expansion tube 2 and the inner cavity of the joint 3. Wherein, the sheath tube 1 is a bendable sheath tube, and any flexible sheath tube of any existing ureteral calculus removing operation tool can be adopted.
Two middle guide grooves 10 which penetrate back and forth and are not communicated with the inner cavity of the sheath tube 1 are arranged in the side wall of the sheath tube 1, the two middle guide grooves 10 are symmetrically arranged left and right, and the axis of the middle guide groove 10, the axis of the inner cavity of the sheath tube 1 and the axis of the sheath tube 1 are arranged in parallel.
The joint 3 is provided with two rear guide grooves 30, the two rear guide grooves 30 are symmetrically arranged left and right, the front end of each rear guide groove 30 is communicated with the rear end of the corresponding middle guide groove 10, the rear end of each rear guide groove 30 is opened and penetrates through the rear end face of the joint 3, and the rear guide grooves 30 are arranged on the inner wall of the joint 3.
The expansion pipe 2 is provided with two front guide grooves 20, the rear end of the front guide groove 20 is communicated with the front end of the middle guide groove 10, the front end of the front guide groove 20 is communicated with the inner cavity of the expansion pipe 2, the front end opening of the front guide groove 20 is arranged on the inner wall of the expansion pipe 2, and the front end opening of the front guide groove 20 is close to the rear end of the expansion pipe 2. Wherein, the front and rear ends of each middle guiding groove 10 are connected with a front guiding groove 20 and a rear guiding groove 30, and the middle guiding grooves 10, the front guiding grooves 20 and the rear guiding grooves 30 are used for the guiding wires 100 to pass through. Wherein, the front end of the inner wall of the sheath tube 1 is smoothly connected with the rear end of the inner wall of the expansion tube 2, the front end face of the sheath tube 1 is connected with the rear end face of the expansion tube 2, and the sheath tube 1 and the expansion tube 2 are fused and fixed.
The joint 3 comprises a fixing part 31 sleeved and connected to the outer side of the rear end of the sheath tube 1 and a body 32 positioned at the rear side of the fixing part 31, the inner diameter of the body 32 is smaller than that of the fixing part 31, and the rear guide groove 30 penetrates the front end face of the body 32 forwards. The sheath tube 1 is bent by pulling two pull ropes 200, an operation end 34 at the joint of the rear end of the pull ropes 200 is arranged on the joint 3, two pull rope guide grooves for the pull ropes to pass through are arranged on the joint 3, each pull rope guide groove comprises a straight section groove 33 parallel to the axis of the inner cavity of the joint, and the straight section grooves 33 penetrate through the body 32 front and back for processing; wherein, each rear guiding groove 30 is located between two straight section grooves 33, each straight section groove 33 is located between two rear guiding grooves 30, and four grooves formed by two rear guiding grooves 30 and two straight section grooves 33 are evenly arranged on the joint 3 at intervals in a ring shape.
The utility model has the advantages that the guide wire can not directly press human tissues when in use, and the use of other parts in the sheath tube can not be influenced, thereby being convenient to use.
Claims (6)
1. The utility model provides an adjustable ureter guiding sheath, includes sheath pipe, adjustable curved expansion pipe and joint, sheath pipe one end is fixed with the expansion pipe, the sheath pipe other end is fixed with the joint, the inner chamber of sheath pipe and the inner chamber intercommunication of expansion pipe and joint, its characterized in that: the inner guide groove is arranged in the side wall of the sheath tube, the inner guide groove axis, the inner cavity axis and the sheath tube axis are parallel, the joint is provided with a rear guide groove with the front end communicated with the rear end of the middle guide groove and the rear end opened, the expansion tube is provided with a front guide groove with the rear end communicated with the front end of the middle guide groove and the front end communicated with the inner cavity of the expansion tube, and the front end opening of the front guide groove is arranged on the inner wall of the expansion tube and is close to the rear end of the expansion tube.
2. The adjustable ureteral introducer sheath of claim 1, wherein: the sheath tube is internally provided with two middle guide grooves, the joint is internally provided with two rear guide grooves, the expansion tube is internally provided with two front guide grooves, the two middle guide grooves are arranged in bilateral symmetry, and the front end and the rear end of each middle guide groove are connected with one front guide groove and one rear guide groove.
3. The adjustable ureteral introducer sheath of claim 2, wherein: the sheath is a bendable sheath, the connector is further provided with two stay rope guide grooves for a stay rope to pass through, each stay rope guide groove comprises a straight section groove parallel to the axis of the inner cavity of the connector, each rear guide groove is located between the two straight section grooves, each straight section groove is located between the two rear guide grooves, and four grooves formed by the two rear guide grooves and the two straight section grooves are arranged on the connector at annular uniform intervals.
4. The adjustable ureteral introducer sheath of claim 1, wherein: the rear guide groove is formed in the inner wall of the connector, and the rear guide groove penetrates through the rear end face of the connector backwards.
5. The adjustable ureteral introducer sheath according to claim 1 or 3, characterized in that: the connector comprises a fixing part and a body, wherein the fixing part is sleeved and connected to the outer side of the rear end of the sheath tube, the body is positioned at the rear side of the fixing part, the inner diameter of the body is smaller than that of the fixing part, and the rear guide groove penetrates through the front end face of the body forwards.
6. The adjustable ureteral introducer sheath of claim 1, wherein: the front end of the inner wall of the sheath tube is smoothly connected with the rear end of the inner wall of the expansion tube, the front end face of the sheath tube is connected with the rear end face of the expansion tube, and the sheath tube and the expansion tube are fixed in a fusion mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321229107.4U CN219814985U (en) | 2023-05-22 | 2023-05-22 | Ureter guiding sheath capable of adjusting bending |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321229107.4U CN219814985U (en) | 2023-05-22 | 2023-05-22 | Ureter guiding sheath capable of adjusting bending |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219814985U true CN219814985U (en) | 2023-10-13 |
Family
ID=88272695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321229107.4U Active CN219814985U (en) | 2023-05-22 | 2023-05-22 | Ureter guiding sheath capable of adjusting bending |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219814985U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117695506A (en) * | 2024-02-02 | 2024-03-15 | 苏州汇禾医疗科技有限公司 | Sheath tube for interventional therapy |
-
2023
- 2023-05-22 CN CN202321229107.4U patent/CN219814985U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117695506A (en) * | 2024-02-02 | 2024-03-15 | 苏州汇禾医疗科技有限公司 | Sheath tube for interventional therapy |
| CN117695506B (en) * | 2024-02-02 | 2024-05-10 | 苏州汇禾医疗科技有限公司 | Sheath tube for interventional therapy |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |