WO2022012301A1

WO2022012301A1 - Resectoscope sealing member

Info

Publication number: WO2022012301A1
Application number: PCT/CN2021/102358
Authority: WO
Inventors: 林敏�
Original assignee: 珠海市司迈科技有限公司
Priority date: 2020-07-15
Filing date: 2021-06-25
Publication date: 2022-01-20
Also published as: CN213217574U

Abstract

A resectoscope sealing member (10, 20) comprises a first end surface (11, 21), an outer circumferential surface (12, 22), and a second end surface (13, 23) sequentially connected. The first end surface (11, 21) and the second end surface (13, 23) are disposed oppositely. The outer circumferential surface (12, 22) can be sealedly connected to an inner peripheral wall surface of an inner sheath (31) of the resectoscope. The resectoscope sealing member (10, 20) further comprises a positioning portion (14, 24). The positioning portion (14, 24) protrudes outward from or is recessed inward at the first end surface (11, 21), and can be fitted and connected to a resectoscope handle (32). This resectoscope sealing member (10, 20) overcomes the technical drawbacks of the prior art. The resectoscope sealing member (10, 20) is installed in a resectoscope (30), has material uniformity, and does not have any internal gaps, and the outer circumferential surface (12, 22) thereof is sealedly connected to the inner peripheral wall surface of the inner sheath (31) of the resectoscope, thereby providing a superior sealing performance and ensuring a sealing effect. In addition, the positioning portion (14, 24) provided on the resectoscope sealing member (10, 20) achieves positioning of the resectoscope sealing member (10, 20) in a circumferential direction, thereby preventing the sealing performance being affected by a rotation thereof, and achieving an optimal sealing effect.

Description

A resectoscope seal

technical field

The utility model relates to the technical field of medical instruments, in particular to a resectoscope sealing member.

Background technique

Resectoscope is a commonly used instrument in electrosurgery. It can be used in combination with electrodes. It is widely used in urological surgery for minimally invasive surgery, such as benign prostatic hyperplasia, bladder tumor, uterine fibroids, endometrial polyps and other diseases. . A general resectoscope consists of an outer sheath, an inner sheath, an endoscope, and an operating handle, wherein the operating handle is a manipulator that can connect the inner sheath and the endoscope and install electrodes. During the procedure, the medical staff can hold the operating handle, and use the thumb to push the slider on the handle to control the position of the electrodes to cut and coagulate the tissue.

Patent WO99/51155 discloses a resectoscope, in which the proximal end of the operating handle is connected to the proximal end of the endoscope, and the distal end of the operating handle is a handle locking head for locking with the proximal end of the inner sheath, In order to prevent the electrolyte from flowing back to the handle during the operation, the connection between the handle locking head and the inner sheath is sealed with a sealing plug. The gap between the sealing plug and the handle locking head matches. When the electrode and the handle are installed together, the sealing plug fills the gap in the handle locking head, so that the outer surface of the handle locking head is continuous and smooth, and the electrode rod is radially fixed to the handle Above, the relative sealing of the handle and the electrode part is achieved with a sealing plug.

From the above, the sealing method of the prior art has the following technical defects: 1) because the connection area between the handle locking head and the sealing plug is small, the coordination of the two is unstable, which leads to poor sealing performance; 2 ) Since the handle locking head and the sealing plug are made of different materials, the wear degrees of the two are different, and there is likely to be a gap or poor combination between the two, which further leads to poor sealing performance.

Utility model content

The purpose of the present utility model is to provide a resectoscope seal to solve the technical defects existing in the above-mentioned prior art. The resectoscope seal is installed in the resectoscope, and the material of the resectoscope seal is uniform and does not exist In the inner gap, the outer peripheral surface of the outer ring is sealed with the inner peripheral wall surface of the inner sheath of the resectoscope, which has good sealing performance and ensures the sealing effect; in addition, the positioning part of the resectoscope seal can realize the resectoscope seal. Circumferential positioning to avoid its rotation affecting the sealing performance and achieve the best sealing function.

In order to achieve the above object, the utility model provides the following technical solutions:

A resectoscope seal, the resectoscope seal comprises a first end face, an outer ring peripheral face and a second end face which are connected in sequence, the first end face and the second end face are arranged oppositely; the outer ring The peripheral surface can be sealingly connected with the inner peripheral wall surface of the inner sheath of the resectoscope; the resectoscope seal further includes a positioning portion, the positioning portion protruding outward from the first end face or recessed inward, the The positioning part can be matched and connected with the resectoscope handle.

Further, the resectoscope sealing member is provided with a first through hole and a second through hole extending from the first end surface to the second end surface, wherein at least a part of the inner circumferential surface of the first through hole is formed It can be sealedly connected with the outer peripheral surface of the endoscope rod of the resectoscope, and at least a part of the inner circumferential surface of the second through hole can be sealedly connected with the outer peripheral surface of the electrode rod of the resectoscope.

Further, a first radial convex ring is protruded in the radial direction in the first through hole, and the first radial convex ring can be sealedly connected with the outer peripheral surface of the endoscope rod of the resectoscope.

Further, a second radial convex ring is protruded in the second through hole along the radial direction, and the second radial convex ring can be sealedly connected with the outer peripheral surface of the electrode rod of the resectoscope.

Further, the resectoscope handle includes a handle locking head, the handle locking head is provided with a notch, and the positioning portion protrudes outward from the first end face and is inserted into the notch; or, the The handle locking head is provided with a boss, and the positioning portion is recessed inward from the first end face and sleeved into the boss.

Further, there is an interference fit between the peripheral surface of the outer ring and the inner peripheral wall surface of the inner sheath of the resectoscope.

Further, the second end surface includes a limit surface, the resectoscope seal is sandwiched between the resectoscope inner sheath and the resectoscope handle, and the limit surface can be connected to the resectoscope handle. The inner wall surface of the scope inner sheath abuts, and the first end surface can abut with the handle of the resectoscope.

Further, the limiting surface is a tapered surface, and the taper is consistent with the taper of the inner wall surface of the inner sheath of the resectoscope.

Further, the resectoscope sealing member is a sealing member made of elastic material.

Further, the resectoscope sealing member is a sealing member made of soft elastic material.

The beneficial effects of the present utility model:

The resectoscope seal provided by the utility model is installed in the resectoscope, the material of the resectoscope seal is uniform, there is no internal gap, and the outer peripheral surface of the resectoscope seal is connected to the inner sheath of the resectoscope. The inner peripheral wall is sealed and connected, which solves the problem of the gap or poor combination between the handle locking head and the sealing plug in the prior art due to the fact that the handle locking head and the sealing plug are made of different materials, and the connection area between the two is small. Further lead to the technical defects of poor sealing performance, the sealing performance is good, and the sealing effect is guaranteed; in addition, the positioning part provided by the resectoscope seal can realize the circumferential positioning of the resectoscope seal, so as to avoid its rotation affecting the sealing performance , to achieve the best sealing function.

Description of drawings

1 is a schematic structural diagram of a resectoscope sealing member according to Embodiment 1 of the present invention;

Fig. 2 is the structural representation of the resectoscope sealing member of the second embodiment of the present invention;

3 is a schematic diagram of the resectoscope sealing member installed in the resectoscope according to the second embodiment of the present invention;

FIG. 4 is a partial enlarged view of A in FIG. 3 .

In the figure, 10—resectoscope seal, 11—first end face, 12—outer ring peripheral surface, 13—second end face, 14—positioning part, 15—first through hole, 16—second through hole, 20 - resectoscope seal, 21 - first end face, 22 - outer ring peripheral surface, 23 - second end face, 231 - limit surface, 24 - positioning part, 25 - first through hole, 251 - first radial Convex ring, 26—second through hole, 261—second radial convex ring, 30—resectoscope, 31—resectoscope inner sheath, 32—resectoscope handle, 321—handle locking head, 321-1 —Gap, 322—Hand locking joint, 33—Endoscope rod, 34—Electrode rod

detailed description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, not all of them. Example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Example 1:

Referring to FIG. 1 , FIG. 1 is a schematic structural diagram of the resectoscope sealing member according to the first embodiment of the present invention.

The utility model provides a resectoscope sealing member 10, which belongs to the field of medical equipment. The resectoscope is used in the operation process. The resectoscope sealing member 10 is installed in the resectoscope and is used to prevent the electrolyte from flowing back to the electricity during the operation. Cut mirror handle.

Referring specifically to FIG. 1 , the present embodiment provides a resectoscope sealing member 10 . The resectoscope sealing member 10 is substantially cylindrical. The resectoscope sealing member 10 includes a first end surface 11 , an outer circumferential The face 12 and the second end face 13, the first end face 11 and the second end face 13 are the two opposite end faces of the resectoscope seal 10; when the resectoscope seal 10 is installed in the resectoscope, the outer peripheral surface 12 is tightly connected with the inner peripheral wall of the inner sheath of the resectoscope, and the sealing method is not limited. The electrolyte is backflowed to the resectoscope handle; the resectoscope seal 10 further includes a positioning portion 14, which protrudes outward from the first end face 11 to form a convex portion, or is concave inward to form a groove portion. When the resectoscope seal 10 is installed in the resectoscope, the positioning portion 14 is matched and connected with the resectoscope handle, so as to realize the circumferential positioning of the resectoscope seal 10 and further improve the stability of the resectoscope seal 10 sex and tightness.

In this embodiment, continuing to refer to FIG. 1 , the resectoscope sealing member 10 is provided with a first through hole 15 and a second through hole 16 extending from the first end face 11 to the second end face 12 , which are respectively inside the resectoscope. The endoscope rod and the electrode rod of the resectoscope pass through for use, so it also plays the role of the relative positioning of the endoscope rod of the resectoscope and the electrode rod of the resectoscope by the resectoscope seal 10 at the same time, ensuring that The installation stability of the endoscope rod of the resectoscope and the electrode rod of the resectoscope; specifically, at least a part of the inner circumferential surface of the first through hole 15 is sealingly connected with the outer circumferential surface of the endoscope rod of the resectoscope, The sealing between the two prevents the electrolyte from flowing back to the resectoscope handle during the operation. At the same time, at least a part of the inner peripheral surface of the second through hole 16 is sealed and connected to the outer peripheral surface of the electrode rod of the resectoscope. The sealing between them prevents the electrolyte from flowing back to the resectoscope handle during the operation, and ensures the tightness of the resectoscope seal 10 to the endoscope rod of the resectoscope and the electrode rod of the resectoscope.

In this embodiment, there is no specific limitation. Preferably, the resectoscope sealing member 10 can be elastically deformed by being squeezed. The tightness of the resectoscope seal 10.

In this embodiment, the resectoscope sealing member 10 is installed in the resectoscope. The material of the resectoscope sealing member 10 is uniform, and there is no internal gap similar to that described in the prior art. It is sealed and connected to the inner peripheral wall of the inner sheath of the resectoscope, which solves the problem of existing problems between the handle locking head and the sealing plug in the prior art due to the fact that the handle locking head and the sealing plug are made of different materials, and the connection area between the two is small. Poor internal clearance or combination, as well as technical defects that further lead to poor sealing performance, good sealing performance to ensure sealing effect; in addition, the positioning portion 14 of the resectoscope seal 10 can realize Circumferential positioning to avoid its rotation affecting the sealing performance and achieve the best sealing function.

Embodiment 2:

Referring to FIGS. 2-4 , FIG. 2 is a schematic structural diagram of the resectoscope seal according to the second embodiment of the present invention, and FIG. 3 is a schematic diagram of the resectoscope seal installed in the resectoscope according to the second embodiment of the present invention. 4 is a partial enlarged view of A in FIG. 3 .

In this embodiment, referring specifically to FIGS. 2-4 , the resectoscope sealing member 20 provided in this embodiment is substantially cylindrical, and the resectoscope sealing member 20 includes the first One end face 21, the outer peripheral face 22 and the second end face 23, the first end face 21 and the second end face 23 are the two opposite end faces of the resectoscope seal 20; the resectoscope seal 20 is installed on the resectoscope 30, the outer ring peripheral surface 12 is sealed and connected with the inner peripheral wall surface of the resectoscope inner sheath 31, and the sealing method is not limited. In order to achieve the sealing of the two, avoid backflow of electrolyte to the handle 32 of the resectoscope during surgery.

Continuing to refer to FIGS. 2-4 , the resectoscope seal 20 further includes a positioning portion 24 , the positioning portion 24 is formed to protrude outward from the first end surface 21 , and of course it can also be recessed inward to form a groove portion, etc. In a structural form, when the resectoscope seal 20 is installed in the resectoscope 30, the positioning portion 24 is matched and connected with the resectoscope handle 32 to realize the circumferential positioning of the resectoscope seal 20 and further improve the electrical Stability and tightness of the cut mirror seal 20 . Continuing to refer to FIG. 3 and FIG. 4 , the most common practice in practical applications is that the handle 32 of the resectoscope includes a handle locking head 321 . It is formed to protrude outward and is inserted into the above-mentioned gap 321-1 to realize the circumferential positioning of the resectoscope sealing member 20. At the same time, it can also adapt to the handle locking head of the prior art, which has good practicability and saves money. raw materials.

In addition, when the positioning portion 24 is provided as a groove portion formed by concave inward from the first end surface 21 , correspondingly, the handle locking head 321 is provided with a boss, and the positioning portion 24 is formed by being recessed inward from the first end surface 21 . , and the above-mentioned bosses are sleeved to realize the circumferential positioning of the resectoscope sealing member 20 .

In this embodiment, there is no specific limitation. Preferably, the resectoscope sealing member 20 can be elastically deformed by being squeezed. The tightness of the resectoscope seal 20.

In this embodiment, continuing to refer to FIG. 2 , the resectoscope sealing member 20 is provided with a first through hole 25 and a second through hole 26 extending from the first end face 21 to the second end face 22 . The endoscope rod 33 and the electrode rod 34 of the resectoscope 30 are passed through for use, so the endoscope rod 33 of the resectoscope 30 and the electrode rod 34 of the resectoscope 30 are simultaneously sealed by the resectoscope. The relative positioning of 20 ensures the installation stability of the endoscope rod 33 of the resectoscope 30 and the electrode rod 34 of the resectoscope 30; The outer peripheral surface of the endoscope rod 33 of the endoscope 30 is sealed and connected, and the sealing between the two prevents the electrolyte from flowing back to the resectoscope handle 32 during the operation. At the same time, at least a part of the inner peripheral surface of the second through hole 26 It is sealed and connected with the outer peripheral surface of the electrode rod 34 of the resectoscope 30, and the seal between the two prevents the electrolyte from flowing back to the resectoscope handle 32 from this place during the operation, and ensures that the resectoscope seal 20 is opposite to the resectoscope 30. The tightness of the endoscope rod 33 and the electrode rod 34 of the resectoscope 30.

Continuing to refer to FIGS. 3 and 4 , it may be, but not limited to, preferably, a first radial convex ring 251 is protruded in the radial direction in the first through hole 25 , and the first radial convex ring 251 is connected to the resectoscope. The outer peripheral surface of the endoscope rod 33 of 30 is sealed and matched, and a second radial convex ring 261 is protruded in the radial direction in the second through hole 26, and the second radial convex ring 261 is connected with the electrode rod 34 of the resectoscope 30. The outer peripheral surface of the resectoscope 251 and the second radial convex ring 261 are arranged to further ensure that the endoscope rod 33 of the resectoscope 30 and the resectoscope 30 are sealed by the resectoscope seal 20. The sealing and installation stability of the electrode rod 34 .

In this embodiment, referring to FIG. 4 , the second end surface 23 includes a limiting surface 231 . In the resectoscope 30 , the resectoscope sealing member 20 is sandwiched between the resectoscope inner sheath 31 and the resectoscope handle 32 . The limiting surface 231 is in contact with the inner end wall surface of the resectoscope inner sheath 31 , and at the same time, the first end surface 21 is in contact with the resectoscope handle 32 . In this embodiment, it can be, but is not limited to, preferably, the limiting surface 231 is configured as a tapered surface, and its taper is consistent with the taper of the inner wall surface of the resectoscope inner sheath 31, which further ensures that the resectoscope is sealed The seal of the piece 20 to the inner sheath 31 of the resectoscope.

In this embodiment, before the electrode rod 34 and the resectoscope handle 32 are connected, the resectoscope seal 20 is sleeved on the electrode rod 34 through the first through hole 25. When the electrode rod 34 and the resectoscope handle 32 are connected, the The endoscope rod 33 passes through the second through hole 26, and after the resectoscope inner sheath 31 is installed, the hand piece locking joint 322 is locked, and the resectoscope inner sheath 31 and the handle locking head 321 are locked. When the resectoscope seal 20 is clamped between the resectoscope inner sheath 31 and the handle locking head 321, the resectoscope seal 20 is locked by the inner peripheral wall, inner end wall and handle of the resectoscope inner sheath 31 The end face of the tightening head 321 is compressed, and the resectoscope sealing member 20 forms a sealing layer between the resectoscope inner sheath 31 and the handle locking head 321, thereby realizing the gap between the resectoscope inner sheath 31 and the resectoscope handle 32. seal.

In this embodiment, the resectoscope seal 20 is installed in the resectoscope 30, and the resectoscope seal 20 seals the resectoscope inner sheath 31, the endoscope rod 33 and the electrode rod 34. The material of the mirror seal 20 is uniform, and there is no internal gap similar to that described in the prior art. The locking head and the sealing plug are made of different materials, and the connection area between the two is small, resulting in internal gaps or poor bonding between the two, as well as technical defects that further lead to poor sealing performance, good sealing performance, The sealing effect is ensured; in addition, the positioning portion 24 of the resectoscope sealing member 20 can realize the circumferential positioning of the resectoscope sealing member 20, so as to avoid its rotation affecting the sealing performance and achieve the best sealing function.

The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. The present invention has been described in detail with reference to the preferred embodiments. Those skilled in the art should understand that the technical solutions of the present invention are modified or equivalently replaced, and Solutions that do not deviate from the purpose and scope of the technical solution should be included within the scope of the claims of the present invention.

Claims

A resectoscope seal, characterized in that:

The resectoscope sealing member includes a first end face, an outer ring peripheral face and a second end face which are connected in sequence, and the first end face is arranged opposite to the second end face;

The peripheral surface of the outer ring can be sealedly connected with the inner peripheral wall surface of the inner sheath of the resectoscope;

The resectoscope sealing member further includes a positioning portion, the positioning portion protruding outward or inwardly recessed from the first end surface, and the positioning portion can be matched and connected with the resectoscope handle.
The resectoscope seal of claim 1, wherein:

The resectoscope sealing member is provided with a first through hole and a second through hole extending from the first end face to the second end face, wherein,

At least a part of the inner circumferential surface of the first through hole can be sealed with the outer circumferential surface of the endoscope rod of the resectoscope, and at least a part of the inner circumferential surface of the second through hole can be connected with the electrode rod of the resectoscope. The outer peripheral surface of the sealing connection.
The resectoscope sealing member according to claim 2, wherein a first radial convex ring is protruded in the first through hole along the radial direction, and the first radial convex ring can be connected with the resectoscope The outer peripheral surface of the endoscope rod is sealed to connect.
The resectoscope seal according to claim 2, wherein a second radial convex ring is protruded in the second through hole along the radial direction, and the second radial convex ring can be connected with the resectoscope The outer peripheral surface of the electrode rod is sealed and connected.
The resectoscope seal according to claim 1, wherein the resectoscope handle comprises a handle locking head, the handle locking head is provided with a notch, and the positioning portion extends from the first end surface It protrudes outward and is inserted into the notch; or, the handle locking head is provided with a boss, and the positioning portion is recessed inward from the first end face and sleeved into the boss.
The resectoscope seal according to claim 1, wherein an interference fit is formed between the peripheral surface of the outer ring and the inner peripheral wall of the inner sheath of the resectoscope.
The resectoscope seal according to claim 1, wherein the second end surface includes a limit surface, and the resectoscope seal is sandwiched between the resectoscope inner sheath and the resectoscope Between the handles, the limiting surface can abut with the inner wall surface of the inner sheath of the resectoscope, and the first end surface can abut with the handle of the resectoscope.
The resectoscope seal according to claim 7, wherein the limiting surface is a tapered surface, and the taper is consistent with the taper of the inner wall surface of the inner sheath of the resectoscope.
The resectoscope sealing member according to any one of claims 1-8, wherein the resectoscope sealing member is a sealing member made of elastic material.
The resectoscope sealing member according to claim 9, wherein the resectoscope sealing member is a sealing member of a soft elastic material.