CN110916774A - Sheath tearing and stripping depth regulator - Google Patents
Sheath tearing and stripping depth regulator Download PDFInfo
- Publication number
- CN110916774A CN110916774A CN201911324206.9A CN201911324206A CN110916774A CN 110916774 A CN110916774 A CN 110916774A CN 201911324206 A CN201911324206 A CN 201911324206A CN 110916774 A CN110916774 A CN 110916774A
- Authority
- CN
- China
- Prior art keywords
- pull rod
- fixed sleeve
- handle
- limiting heads
- sheath
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3415—Trocars; Puncturing needles for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B17/3421—Cannulas
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3494—Trocars; Puncturing needles with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors
- A61B17/3496—Protecting sleeves or inner probes; Retractable tips
Abstract
The invention relates to a medical instrument, in particular to a sheath tearing and stripping depth adjuster. The sheath tearing and stripping depth adjuster comprises a fixed sleeve, two limiting heads, a handle and a lifting assembly, wherein the fixed sleeve extends along the front-back direction; one end of each of the two limiting heads is movably connected with one end of the fixed sleeve, the handle is assembled at the rear end of the fixed sleeve, the pulling assembly is connected with one end of each of the two limiting heads through the inside of the fixed sleeve, and the pulling assembly is used for driving the two limiting heads to synchronously rotate to be close to each other and fold up under the action of external force and respectively extend along the length direction of the fixed sleeve or driving the two limiting heads to synchronously rotate to be far away from each other and open and be perpendicular to the fixed sleeve. The advantages are that: operation convenient to use can help the effectual judgement of doctor to tear off the degree of depth that the sheath got into abdominal cavity or thorax, does benefit to going on smoothly of follow-up operation, and then reduces the risk of operation.
Description
Technical Field
The invention relates to a medical instrument, in particular to a sheath tearing and stripping depth adjuster.
Background
The tearing-off sheath is one of the necessary instruments for puncture catheterization, and is widely applied to puncture and other operations.
At present, when putting into and tearing off the sheath, medical personnel tear off the sheath pipe according to the operation demand of reality, go deep into abdominal cavity or thorax, owing to put into the unable effective, quick accuse of the degree of depth, medical personnel hardly put in place fast, accurate, can influence going on of follow-up operation, also be a medical burden to the patient.
Disclosure of Invention
The invention aims to solve the technical problem of providing a sheath tearing and stripping depth adjuster, which effectively overcomes the defects of the prior art.
The technical scheme for solving the technical problems is as follows:
the provided sheath tearing and separating depth adjuster comprises a fixed sleeve, two limiting heads, a handle and a lifting assembly, wherein the fixed sleeve extends along the front-back direction; one end of each of the two limiting heads is movably connected with one end of the fixing sleeve, the handle is assembled at the rear end of the fixing sleeve, the lifting assembly is connected with one end of each of the two limiting heads through the inside of the fixing sleeve, and the lifting assembly is used for driving the two limiting heads to synchronously rotate to be close to each other and to be folded under the action of external force and to respectively extend along the length direction of the fixing sleeve or driving the two limiting heads to synchronously rotate to be far away from each other and to be opened and to be perpendicular to the fixing sleeve.
The invention has the beneficial effects that: structural design is simple, reasonable, operation convenient to use can help the effectual judgement of doctor to tear off the degree of depth that the sheath got into abdominal cavity or thorax, does benefit to going on smoothly of follow-up operation, and then reduces the risk of operation.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the fixed sleeve is a circular tube, a strip-shaped notch penetrating through the fixed sleeve from top to bottom is formed in one end portion of the fixed sleeve along the radial direction of the fixed sleeve, the two limiting heads are arranged in parallel at intervals along the left-right direction, connecting portions arranged at intervals along the left-right direction are respectively arranged at one ends of the two limiting heads, the two connecting portions respectively extend into the notch and are respectively connected with the inner wall of the fixed sleeve in a rotating mode, and the lifting assembly is connected with the two connecting portions through the inside of the fixed sleeve.
The beneficial effects of adopting above-mentioned further scheme are that structural design is reasonable, and the connection is compact between the part, and the operation is more smooth and easy.
Further, the pulling assembly comprises a pull rod and a pull rod handle, the pull rod handle is arranged behind the handle, the pull rod extends along the front-back direction, the rear end of the pull rod is connected with the pull rod handle, the front end of the pull rod sequentially penetrates through the handle and the inside of the fixed sleeve, circular arc-shaped holes penetrating through the two connecting parts from left to right are respectively formed in the two connecting parts, the holes of the two connecting parts are vertically and symmetrically distributed along the axis of the fixed sleeve in a vertical plane, one ends of the two connecting parts are overlapped in the left-right direction, pin shafts penetrating through the two connecting parts from left to right are arranged at one ends of the two holes, the front end of the connecting rod is connected with the pin shafts, the pull rod handle drives the pull rod to move back and forth under the action of external force, the pull rod drives the pin shafts to slide along the pin shafts, and when the pull rod moves forward, the two connecting parts drive the two limiting heads, when the movable limiting head moves backwards, the pull rod drives the two connecting parts to respectively drive the two limiting heads to rotate to close each other.
The beneficial effects of adopting above-mentioned further scheme are that structural design is simple, and operation convenient to use, swift only need the push-and-pull can accomplish the opening and shutting of spacing head.
Furthermore, the front end of the pull rod is provided with a connecting sheet extending forwards, the connecting sheet extends into the space between the two connecting parts, and the pin shaft penetrates through the front end of the connecting sheet left and right.
The beneficial effect who adopts above-mentioned further scheme is that this design does benefit to the good connection of pull rod and round pin axle, and it is more smooth and easy wholly to use.
Further, two above-mentioned spacing heads are the semi-cylindrical structure that bilateral symmetry set up, and above-mentioned spacing head surface and tip and edge department all are equipped with glossy arc chamfer.
The beneficial effect of adopting the above further scheme is to avoid damaging the cavity wall tissue.
The pull rod further comprises a position maintaining assembly, wherein the position maintaining assembly is connected with the pulling assembly and used for enabling the two limiting heads to keep an opening state after the pull rod moves forwards until the two limiting heads rotate to be away from each other and open.
The beneficial effects of adopting above-mentioned further scheme are that the convenience is kept the state of opening of spacing head, does benefit to medical personnel's follow-up operation.
Further, above-mentioned position keeps the subassembly including setting up in the block portion of above-mentioned handle rear end and setting up in the cutting ferrule of above-mentioned pull rod handle front end, and above-mentioned cutting ferrule matches with above-mentioned block portion, and after above-mentioned pull rod moves forward and rotates to two above-mentioned spacing heads and keep away from each other, above-mentioned block portion outside is located to above-mentioned cutting ferrule cover to block each other.
The beneficial effects of adopting the above further scheme are that structural design is simple, convenient operation, quick.
Drawings
FIG. 1 is a schematic structural view of a limiting head in the unsheathing depth adjuster of the present invention when the limiting head is opened;
FIG. 2 is a schematic view of a partial structure of the sheath-stripping depth adjuster of the present invention when the limiting head is opened
FIG. 3 is a schematic structural view of the tearing-off sheath depth adjuster of the present invention with the stopper closed;
fig. 4 is a partial structural schematic diagram of the tearing-off sheath depth adjuster when the limiting head is folded.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the fixed sleeve, 2, spacing head, 3, handle, 4, carry and draw the subassembly, 21 connecting portion, 31, block portion, 41, pull rod, 42, pull rod handle, 43, round pin axle, 411, connection piece, 421, cutting ferrule.
Detailed Description
The principles and features of this invention are described below in conjunction with examples which are set forth to illustrate, but are not to be construed to limit the scope of the invention.
Example (b): as shown in fig. 1 to 4, the depth adjuster for avulsion sheath of the embodiment comprises a fixed sleeve 1, two limiting heads 2, a handle 3 and a lifting component 4, wherein the fixed sleeve 1 extends along the front-back direction; one end of each of the two limiting heads 2 is movably connected with one end of the fixing sleeve 1, the handle 3 is assembled at the rear end of the fixing sleeve 1, the lifting assembly 4 is connected with one end of each of the two limiting heads 2 through the inside of the fixing sleeve 1, and the lifting assembly 4 is used for driving the two limiting heads 2 to synchronously rotate to be close to each other and extend along the length direction of the fixing sleeve 1 or driving the two limiting heads 2 to synchronously rotate to be away from each other and extend perpendicular to the fixing sleeve 1 under the action of external force.
The operation process is as follows:
in abdominal cavity operation and thoracic cavity operation, when medical personnel use the avulsion sheath tube, the avulsion sheath goes deep into the abdominal cavity or the thoracic cavity along with the expansion sheath tube, after the expansion sheath is pulled out, a doctor cannot judge the distance from the head end of the deep entry end of the avulsion sheath tube to the inner wall of the abdominal cavity or the thoracic cavity, after the instrument is used, the abdominal wall or the thoracic cavity wall can be pulled back and lifted, meanwhile, the avulsion sheath tube is tightly attached to the abdominal cavity or the inner wall of the thoracic cavity, after the instrument is withdrawn, the doctor can go deep into the avulsion sheath according to the actual condition, and the depth of; it is specific, tear and take off the sheath pipe box outside the fixed sleeving 1 of the sheath degree of depth regulator that tears of this embodiment, can control opening and closing of two spacing heads 2 through carrying to draw subassembly 4, just can inject the head end position that tears the sheath pipe after opening (the head end that tears the sheath pipe and leans on spacing head 2 after opening), when stomach wall or thorax are mentioned in the instrument pullback, can judge to tear and take off sheath pipe head end position and just go deep into abdominal cavity or thorax inner wall, afterwards, make two spacing heads 2 closed backs through carrying to draw subassembly 4 operation, can be according to doctor's actual demand, the operation is torn and is taken off the sheath pipe, go deep into abdominal cavity or thorax, so the degree of depth is controllable promptly.
It should be noted that: the two limiting heads 2 are rotated by 90 degrees to open, namely the opening angle is 90 degrees.
The following are specifically mentioned: two spacing head 2 openings, the other end all extends the outside of fixed sleeve 1, when folding up, one side that two spacing head 2 kept away from each other can not bulge the left and right sides of fixed sleeve 1 in the left and right sides orientation.
It should be noted that: the left-right distance between the two limiting heads 2 is moderate, and the limiting heads are not easy to be too small, so that the limiting heads and the cavity wall tissue can be prevented from being clamped when the limiting heads are opened or closed.
As a preferred embodiment, the fixing sleeve 1 is a circular tube, one end of the fixing sleeve is provided with a strip-shaped notch penetrating through the fixing sleeve vertically along the radial direction, the two limiting heads 2 are arranged side by side along the left-right direction at intervals, one end of each limiting head is provided with a connecting part 21 arranged at intervals along the left-right direction, the two connecting parts 21 respectively extend into the notches and are respectively connected with the inner wall of the fixing sleeve 1 in a rotating manner, and the pulling assembly 4 is connected with the two connecting parts 21 through the inside of the fixing sleeve 1.
Preferably, the two connecting portions 21 are of a sheet-like structure and are arc-shaped sheets matching the hole directions of the arc-shaped.
In a preferred embodiment, the pulling assembly 4 includes a pulling rod 41 and a pulling rod handle 42, the pulling rod handle 42 is disposed behind the handle 3, the pulling rod 41 extends in a front-back direction, a rear end of the pulling rod 41 is connected to the pulling rod handle 42, a front end of the pulling rod passes through the handle 3 and the inside of the fixed sleeve 1 in sequence, two connecting portions 21 are respectively provided with circular arc-shaped holes penetrating through the connecting portions in a left-right direction, the holes of the two connecting portions 21 are distributed along an axis of the fixed sleeve 1 in a vertical plane in a vertically symmetrical manner, and one end of the two connecting portions are overlapped in the left-right direction, one end of the two holes is provided with a pin shaft 43 penetrating through the two connecting portions in the left-right direction, a front end of the connecting rod 41 is connected to the pin shaft 43, the pulling rod handle 42 drives the pulling rod 41 to move back and forth under an external force, thereby driving, when the pull rod 41 moves forward, the pull rod 41 drives the two connecting portions 21 to respectively drive the two limiting heads 2 to rotate away from each other, and when the pull rod 41 moves backward, the pull rod 41 drives the two connecting portions 21 to respectively drive the two limiting heads 2 to rotate to close each other.
In this embodiment, only the pull rod 41 needs to be driven to move back and forth by the pull rod handle 42 during operation, so that the operation is fast and convenient.
In a preferred embodiment, a connecting piece 411 extending forward is provided at the front end of the pull rod 41, the connecting piece 411 extends between the two connecting portions 21, and the pin shaft 42 penetrates the front end of the connecting piece 411 in the left and right directions.
In this embodiment, the connecting piece 411 is a strip shape, the thickness of the connecting piece is smaller than the diameter of the pull rod 41, the occupied space is small, and the connecting piece 411 can be easily clamped between the two connecting parts 21, so that the connection between the parts is compact.
As a preferred embodiment, two of the limiting heads 2 are of a semi-cylindrical structure arranged in bilateral symmetry, and smooth arc chamfers are arranged on the surfaces, the end parts and the edges of the limiting heads 2.
In this embodiment, the rounded design at the corners and edges avoids scratching the tissue when in contact with the internal tissue.
Preferably, the front edge of the fixing sleeve 1 and the edges of the recess are rounded.
As a preferable embodiment, the device further comprises a position holding assembly, wherein the position holding assembly is connected with the pulling assembly 4 and is used for holding the two limiting heads 2 in an open state after the pulling rod 41 moves forwards until the two limiting heads 2 rotate away from each other and open.
In this embodiment, when the pull rod 41 and the pull rod handle 42 move forward to drive the two limiting heads 2 to open, the two limiting heads 2 can be kept in the current open state by the position maintaining assembly, which is convenient for the medical staff to perform the subsequent operation.
More specifically, the position maintaining assembly includes a clamping portion 31 disposed at the rear end of the handle 3 and a clamping sleeve 421 disposed at the front end of the pull rod handle 42, the clamping sleeve 421 is matched with the clamping portion 31, when the pull rod 41 moves forward until the two position limiting heads 2 rotate away from each other, the clamping sleeve 421 is sleeved outside the clamping portion 31 and clamped with each other, when the pull rod 41 and the pull rod handle 42 move forward to drive the two position limiting heads 2 to open, the clamping sleeve 421 moves along with the pull rod and is sleeved outside the clamping portion 31 and clamped with each other, when the position limiting heads 2 need to be closed, an external force pulls the pull rod handle 42 and the pull rod 41 backward, and the external force overcomes the clamping force of the clamping sleeve 421 and the clamping portion 31 to move the pull rod 41 backward, thereby driving the two position limiting heads 2 to close.
The inner wall of the card sleeve 421 is drawn from the back to the front, and the card sleeve 421 has a certain elasticity, so that the card sleeve 421 can be retained in position by interference fit of the card sleeve 421 and the engaging portion 31.
Of course, the structure of the ferrule 421 and the snap-fit portion 31 can be equally replaced by other conventional structures or components having similar position-retaining functions.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The utility model provides a tear and take off sheath depth adjuster which characterized in that: the lifting device comprises a fixed sleeve (1), two limiting heads (2), a handle (3) and a lifting assembly (4), wherein the fixed sleeve (1) extends along the front-back direction; one end of each of the two limiting heads (2) is movably connected with one end of the corresponding fixed sleeve (1), the handle (3) is assembled at the rear end of the corresponding fixed sleeve (1), the lifting assembly (4) is connected with one end of each of the two limiting heads (2) through the inside of the corresponding fixed sleeve (1), and the lifting assembly (4) is used for driving the two limiting heads (2) to synchronously rotate to be close to each other and close up under the action of external force and respectively extend along the length direction of the corresponding fixed sleeve (1), or driving the two limiting heads (2) to synchronously rotate to be far away from each other and open and are respectively perpendicular to the corresponding fixed sleeve (1).
2. A rip-sheath depth adjuster according to claim 1, wherein: fixed sleeve pipe (1) is the pipe, and its one end tip runs through the breach of its bar about radially being equipped with, two limit head (2) are followed left right direction interval sets up side by side, and the two one end is equipped with connecting portion (21) that set up along left right direction interval respectively, two connecting portion (21) stretch into respectively in the breach, and respectively with the inner wall of fixed sleeve pipe (1) rotates to be connected, carry and draw subassembly (4) warp the inside and two of fixed sleeve pipe (1) connecting portion (21) are connected.
3. A rip-sheath depth adjuster according to claim 2, wherein: the lifting assembly (4) comprises a pull rod (41) and a pull rod handle (42), the pull rod handle (42) is arranged behind the handle (3), the pull rod (41) extends in the front-back direction, the rear end of the pull rod handle (42) is connected with the front end of the pull rod handle, the front end of the pull rod handle sequentially penetrates through the handle (3) and the inner part of the fixed sleeve (1), two connecting parts (21) are respectively provided with circular arc-shaped holes which penetrate through the connecting parts from left to right, the holes of the two connecting parts (21) are distributed along the axis of the fixed sleeve (1) in a vertical plane in an up-down symmetrical mode, one ends of the two connecting parts are overlapped in the left-right direction, one end of each hole is provided with a pin shaft (43) which penetrates through the two connecting parts from left to right, the front end of the connecting rod (41) is connected with the pin shaft (43), and the pull rod handle (, therefore, the pull rod (41) is driven to drive the pin shaft (43) to slide along the two holes, when the pull rod (41) moves forwards, the pull rod (41) drives the two connecting parts (21) to respectively drive the two limiting heads (2) to rotate and move away from each other, and when the pull rod (41) moves backwards, the pull rod (41) drives the two connecting parts (21) to respectively drive the two limiting heads (2) to rotate and move close to each other.
4. A rip-sheath depth adjuster according to claim 3, wherein: the front end of the pull rod (41) is provided with a connecting piece (411) extending forwards, the connecting piece (411) extends into the space between the two connecting parts (21), and the pin shaft (42) penetrates through the front end of the connecting piece (411) left and right.
5. A rip-sheath depth adjuster according to claim 3, wherein: two the limit head (2) are the semi-cylindrical structure that bilateral symmetry set up, limit head (2) surface and tip and edge department all are equipped with glossy arc chamfer.
6. A rip-sheath depth adjuster according to any one of claims 3 or 5, wherein: the lifting mechanism further comprises a position maintaining assembly, wherein the position maintaining assembly is connected with the lifting assembly (4) and used for enabling the two limiting heads (2) to be kept in an opened state after the pull rod (41) moves forwards until the two limiting heads (2) rotate to be away from each other and are opened.
7. A rip-sheath depth adjuster according to claim 6, wherein: the position retaining assembly comprises a clamping portion (31) arranged at the rear end of the handle (3) and a clamping sleeve (421) arranged at the front end of the pull rod handle (42), the clamping sleeve (421) is matched with the clamping portion (31), and when the pull rod (41) moves forwards until the two limiting heads (2) rotate to be away from each other, the clamping sleeve (421) is sleeved outside the clamping portion (31) and clamped with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911324206.9A CN110916774A (en) | 2019-12-20 | 2019-12-20 | Sheath tearing and stripping depth regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911324206.9A CN110916774A (en) | 2019-12-20 | 2019-12-20 | Sheath tearing and stripping depth regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110916774A true CN110916774A (en) | 2020-03-27 |
Family
ID=69864555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911324206.9A Pending CN110916774A (en) | 2019-12-20 | 2019-12-20 | Sheath tearing and stripping depth regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110916774A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018131A (en) * | 2021-10-27 | 2022-02-08 | 共享装备股份有限公司 | Counter bore hole depth measuring device |
-
2019
- 2019-12-20 CN CN201911324206.9A patent/CN110916774A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018131A (en) * | 2021-10-27 | 2022-02-08 | 共享装备股份有限公司 | Counter bore hole depth measuring device |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20230627 Address after: 430000 Hubei city of Wuhan province Wuchang Luojiashan Applicant after: WUHAN University Address before: Room 04, 5 / F, building B10, phase I, block B, Wuhan hi tech medical instrument Park, 818 Gaoxin Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province, 430000 Applicant before: WUHAN SHENGHUIKANG BIO-MEDICINE TECHNOLOGY Co.,Ltd. |
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