An obturator for an electric resectoscope

Abstract

The present application discloses an obturator for an electroresectoscope, which relates to the technical field of surgical instruments, and includes a rod body, a connecting member, a swing head and an operating assembly; the swing head and the connecting member are respectively arranged at the two ends of the rod body, and the connecting member is detachably connected to the electroresectoscope; the swing head is rotatably connected to the rod body; the operating assembly includes a first rotating member, a second rotating member and two connecting wires; the first rotating member and the second rotating member are both rotatably connected to the rod body; the connecting wire can be wound on the first rotating member and the second rotating member, and the change in the length of the connecting wire can drive the swing head to rotate. The present application has high operational flexibility and is easy to operate, so that the process of inserting the electroresectoscope into the urethra under the action of the obturator can be smoother.

Description

Technical Field

[0001] The present application relates to the technical field of surgical instruments, and in particular to an obturator for an electroresectoscope. Background Art

[0002] The obturator is an important medical device used in urological surgery. It is mainly used to close the orifice of the surgical site during endoscopic surgery to prevent the leakage of urine or other body fluids and promote the healing of surgical wounds.

[0003] At present, traditional resectoscopes are usually equipped with fixed obturators, such as the obturator disclosed in the Chinese utility model patent "A resectoscope, resectoscope sheath and obturator" with announcement number CN214511287U. Although this obturator has a simple structure and low cost, it has poor flexibility in actual operation due to the inability to adjust the angle. It is easy to generate large friction on the urethral wall during insertion, causing damage to the urethral tissue, thereby increasing the risk of surgery.

[0004] Therefore, there is an urgent need for a flexible-operated electroresectionoscope obturator. Summary of the invention

[0005] The present application provides an obturator for an electroresectoscope, which has high operational flexibility and is easy to operate, thereby enabling the process of inserting the electroresectoscope into the urethra to be smoother under the action of the obturator.

[0006] The present application provides an obturator for an electroresectoscope, which adopts the following technical solution:

[0007] An obturator for an electric resectoscope comprises a rod body, a connecting piece, a swing head and an operating assembly;

[0008] The swing head and the connecting piece are respectively arranged at two ends of the rod body, and the connecting piece is detachably connected to the inner sheath of the resectoscope; after the connecting piece is connected to the inner sheath, the rod body is penetrated by the inner sheath, and the swing head is located on the side of the inner sheath away from the connecting piece;

[0009] The swing head is rotatably connected to the rod body, and the rotation axis of the swing head is perpendicular to the length direction of the rod body;

[0010] The operating assembly includes a first rotating member, a second rotating member and two connecting lines;

[0011] The rod body has a mounting seat on a side of the connecting member away from the swing head, the first rotating member and the second rotating member are both arranged on the mounting seat and are both rotatably connected to the rod body, and the rotation axis of the first rotating member and the rotation axis of the second rotating member are both perpendicular to the length direction of the rod body;

[0012] A corresponding clearance space is opened inside the rod body, and the connecting line passes through the clearance space. Two ends of one connecting line are respectively connected to the first rotating member and one side of the swing head, and two ends of the other connecting line are respectively connected to the second rotating member and the other side of the swing head; the connecting line can be wound on the first rotating member and the second rotating member, and the change in the length of the connecting line can drive the swing head to rotate.

[0013] By adopting the above technical solution, during the process of inserting the resectoscope into the urethra, the operator can control the rotation of the first rotating member and the second rotating member to swing the swing head of the obturator, so that the resectoscope has higher operational flexibility and is easy to operate, thereby making the process of inserting the resectoscope into the urethra under the action of the obturator smoother.

[0014] Optionally, the connecting member is an annular structure, the connecting member is rotatably connected to the rod body, and the rotation axis of the connecting member coincides with the axis of the connecting member itself and the axis of the rod body.

[0015] By adopting the above technical solution, the operator can conveniently control the rotation of the rod body relative to the inner sheath during the insertion of the resectoscope into the urethra, thereby further improving the flexibility of the swing head movement, and further enabling the resectoscope to have higher operational flexibility.

[0016] Optionally, the operating component includes an operating member and a linkage member;

[0017] The operating member is connected to the first rotating member, the first rotating member and the second rotating member are both located in the mounting seat, and the operating member extends outwardly along the radial direction of the rod body; the linkage member is an annular structure, the linkage member is rotatably connected to the mounting seat, and the rotation axis of the linkage member coincides with its own axis and is parallel to the length direction of the rod body;

[0018] One side of the linkage member has a gear structure, and one end of the first rotating member and the second rotating member close to the linkage member also has a gear structure, and the linkage member is gear-engaged with the first rotating member and the second rotating member; when the first rotating member is controlled to rotate by the operating member, the first rotating member can drive the second rotating member to rotate synchronously and in the opposite direction through the linkage member.

[0019] By adopting the above technical solution, the first rotating member and the second rotating member can be controlled to rotate simultaneously through the operating member, so that the swing control of the swing head can be made more convenient and quick.

[0020] Optionally, the operating member is movably connected to the first rotating member, and the movable direction of the operating member is parallel to the rotation axis of the first rotating member;

[0021] The operating member has a mating portion at one end close to the first rotating member, and a mating groove matched with the mating portion is formed at one end of the first rotating member close to the operating member; during the movement of the operating member, the mating portion can be engaged with the mating groove, and the operating member can drive the first rotating member to rotate.

[0022] By adopting the above technical solution, the operator can control the activity of the operating member according to the operation requirements, so that the operating member is in a state of controlling the rotation of the first rotating member or acting as a handle, thereby making the use of the electroresectoscope obturator more flexible.

[0023] Optionally, when the operating member moves to an extreme position in a direction approaching the first rotating member, the mating portion engages with the mating groove; when the operating member moves to an extreme position in a direction away from the first rotating member, the operating member can rotate relative to the first rotating member, and the rotation axis of the operating member coincides with the rotation axis of the first rotating member.

[0024] By adopting the above technical solution, when the operating piece can control the swinging of the swinging head, the part of the operating piece located on the side of the mounting seat is smaller, which can effectively reduce the probability of accidentally touching the operating piece and causing the swinging head to swing; when the operating piece is used to act as a handle, the part of the operating piece located on the side of the mounting seat is larger, which can facilitate the operator to grasp and apply force.

[0025] Optionally, the operating assembly further includes a positioning member and an elastic member;

[0026] The positioning member is movably connected to the mounting seat, and the movement direction of the positioning member is parallel to the length direction of the rod body; the connecting member has a positioning surface on one side close to the mounting seat, the friction between the positioning member and the positioning surface is large, and when the positioning member moves to the extreme position in the direction close to the connecting member, the positioning member contacts and abuts against the positioning surface;

[0027] The two ends of the elastic member are respectively connected to the positioning member and the mounting seat, and can drive the positioning member to move in the direction away from the connecting member to the extreme position and maintain it; the operating member has a wedge-shaped abutment portion on one side close to the positioning member, and the positioning member has a wedge-shaped structure at one end close to the operating member, and when the matching portion is engaged with the matching groove, the abutment portion contacts and abuts against the positioning member, and the positioning member contacts and abuts against the positioning surface.

[0028] By adopting the above technical solution, when the operating member moves to a state where it can control the swinging of the swing head, the positioning member will then contact and resist the positioning surface. The friction force between the positioning member and the positioning surface can improve the position stability between the connecting member and the rod body, thereby effectively reducing the probability of the rod body rotating incorrectly relative to the connecting member.

[0029] Optionally, the operating member is further provided with a plurality of limiting members on the abutting portion, and the plurality of limiting members are distributed in a circular array on the abutting portion with the axis of the operating member as the axis;

[0030] The limiting member can be telescopically movable in and out of the abutment portion. When the operating member moves to an extreme position in a direction away from the first rotating member, the plurality of limiting members will contact the wedge-shaped structure of the positioning member and be located on a side of the positioning member close to the first rotating member.

[0031] By adopting the above technical solution, when the operating member moves to a state where it can serve as a handle, the operating member can be limited by the positioning member through multiple limiting members, thereby increasing the difficulty of changing its state relative to the first rotating member, thereby effectively improving the position stability of the operating member at this time, enabling it to stably play its role as a handle and reducing the probability of changing the state after an erroneous operation.

[0032] Optionally, a hand-held rod extends outwardly from the connecting member along its own radial direction.

[0033] By adopting the above technical solution, it is convenient for the operator to hold the handheld rod to control the resectoscope to insert into the urethra, and it is also convenient for the operator to operate the operating component, thereby reducing the probability of causing a large displacement of the resectoscope during the operation of the operating component.

[0034] Optionally, an imaging device is also included, and the imaging device is arranged at one end of the swing head away from the rod body.

[0035] By adopting the above technical solution, the imaging device can provide the operator with a real-time view at the front end of the swinging head, thereby assisting the operator to control the insertion of the resectoscope according to the situation inside the urethra and reducing the risk of misoperation due to limited vision during the process.

[0036] Optionally, a plurality of pressure sensors are also included, and the pressure sensors are arranged on the surface of the oscillating head.

[0037] By adopting the above technical solution, a number of pressure sensors can continuously monitor the pressure of the contact surface between the obturator and the urethral tissue, so that the operator can control the swing head of the obturator according to real-time data, so that the obturator can maintain the best sealing state in the urethra while preventing leakage or tissue damage caused by excessive pressure or insufficient force.

[0038] In summary, the present application includes at least one of the following beneficial effects:

[0039] 1. It can make the resectoscope have higher operating flexibility and convenient operation, so that the process of inserting the resectoscope into the urethra under the action of the obturator can be smoother;

[0040] 2. It can make the position change process of the swing head more flexible, and at the same time facilitate the operator to operate the obturator, thereby effectively reducing the probability of tissue damage during the insertion of the resectoscope into the urethra;

[0041] 3. It is convenient for the operator to control the swing of the swing head on the obturator according to the imaging or pressure monitoring data, and it is convenient for the operator to swing the swing head or rotate the rod body according to different needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a schematic diagram of the structure of an obturator for a resectoscope in Example 1 when used in conjunction with a resectoscope;

[0043] Figure 2 is a cross-sectional view of a resectoscope obturator in accordance with Embodiment 1 when used in conjunction with a resectoscope;

[0044] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0045] Figure 4 is a partial cross-sectional view of the operating member in Embodiment 1 when it moves outward to the extreme position;

[0046] Figure 5 This is a schematic structural diagram of Example 2 when an obturator for a resectoscope is used in conjunction with a resectoscope;

[0047] Figure 6 It is a schematic diagram of the structure of Example 3 when an obturator for an electric resectoscope is used in conjunction with an electric resectoscope.

[0048] Explanation of the reference numerals: 1. Rod body; 11. Mounting seat; 12. Clearance space; 2. Connecting piece; 21. Positioning surface; 22. Hand-held rod; 3. Swinging head; 4. Operating assembly; 41. First rotating piece; 411. Matching groove; 42. Second rotating piece; 43. Connecting line; 44. Linkage piece; 45. Operating piece; 451. Matching portion; 452. Abutment portion; 46. Positioning piece; 47. Elastic piece; 48. Limiting piece; 5. Resectoscope; 51. Inner sheath; 6. Imaging device; 7. Pressure sensor. DETAILED DESCRIPTION

[0049] The following combination Figure 1-Figure 6 This application is described in further detail.

[0050] Embodiment 1:

[0051] The embodiment of the present application discloses an obturator for an electroresectoscope, which is used in urological surgery and can assist the electroresectoscope in being smoothly inserted into the urethra, thereby facilitating subsequent surgery.

[0052] Reference Figure 1 and Figure 2 The obturator comprises a rod body 1, a connector 2, a swing head 3 and an operating assembly 4. The rod body 1 is used for the obturator to be inserted into the resectoscope 5; the connector 2 is used for realizing a detachable connection between the obturator and the resectoscope 5; the swing head 3 is used for inserting the head into the urethra to guide the insertion of the resectoscope 5; the operating assembly 4 can facilitate the operator to swing the swing head 3, so that the process of inserting the resectoscope 5 into the urethra can be more convenient and smooth.

[0053] Reference Figure 2 and Figure 3 The rod body 1 is a cylindrical rod-shaped structure as a whole, the connecting member 2 is installed at one end of the rod body 1 in the length direction, and the radial dimension of the end of the rod body 1 away from the connecting member 2 is larger than the radial dimension of other parts of the rod body 1.

[0054] The connector 2 is an annular structure as a whole. The connector 2 is sleeved outside the rod body 1 and is rotatably connected to the rod body 1, and the rotation axis of the connector 2 coincides with its own axis and the axis of the rod body 1. When the obturator is installed and connected to the resectoscope 5, the connector 2 will be connected to the inner sheath 51 of the resectoscope 5. At this time, the rod body 1 will penetrate into the internal space of the inner sheath 51, and the end of the rod body 1 away from the connector 2 will close the opening of the inner sheath 51 away from the end of the connector 2. In this embodiment, it is preferred that the connector 2 and the inner sheath 51 are detachably connected by threaded matching, and it is preferred that the edge position of the end of the resectoscope 5 away from the connector 2 is rounded to reduce the probability of damaging the tissue during the insertion of the resectoscope 5; since the resectoscope 5 and the above-mentioned connection method are both existing technologies in the field, they are not described here in detail. The resectoscope 5 is only briefly represented in the accompanying drawings, and the connection structure between the connector 2 and the inner sheath 51 is omitted.

[0055] The swing head 3 is a bullet-shaped structure with a smooth surface, and the tail of the swing head 3 is rotatably mounted on the end of the rod body 1 away from the connecting piece 2, and the rotation axis of the swing head 3 is perpendicular to the axis of the rod body 1. In this embodiment, in order to further reduce the probability of damaging tissue during the insertion of the resectoscope 5 into the urethra, the position of the rod body 1 close to the swing head 3 is preferably rounded, and the maximum radial dimension of the swing head 3 is preferably equal to the radial dimension of the end of the resectoscope 5 close to the swing head 3.

[0056] The operating assembly 4 includes a first rotating member 41, a second rotating member 42, two connecting wires 43, an operating member 45, a linkage member 44, a positioning member 46 and an elastic member 47. The first rotating member 41, the second rotating member 42 and the two connecting wires 43 can work together to realize the operator's swing control of the swing head 3; the operating member 45 can facilitate the operator to control the swing of the swing head 3; the linkage member 44 can facilitate the operator to control the first rotating member 41 and the second rotating member 42 at the same time; the positioning member 46 can facilitate the operator to control the relative position relationship between the rod body 1 and the connecting member 2; and the elastic member 47 can facilitate the positioning member 46 to move and reset.

[0057] One end of the rod body 1 away from the swing head 3 protrudes outward with a mounting seat 11 for mounting part of the structure of the operating component 4. The mounting seat 11 is annular in structure as a whole, located on the side of the connecting member 2 away from the swing head 3 and fits against the surface of the connecting member 2, and the axis of the mounting seat 11 coincides with the axis of the rod body 1.

[0058] The first rotating member 41 and the second rotating member 42 are both cylindrical structures as a whole and are both installed inside the mounting base 11. The first rotating member 41 and the second rotating member 42 are both rotatably connected to the mounting base 11. The rotation axis of the first rotating member 41 and the rotation axis of the second rotating member 42 coincide with their own axes. The rotation axis of the first rotating member 41 and the rotation axis of the second rotating member 42 coincide with each other and both intersect with the axis of the rod body 1.

[0059] One end of the first rotating member 41 close to the rod body 1 and one end of the second rotating member 42 close to the rod body 1 both have a structure for winding the connecting wire 43, and the two connecting wires 43 correspond to the first rotating member 41 and the second rotating member 42 one by one respectively; one end of the connecting wire 43 is fixedly connected to one end of the first rotating member 41 close to the rod body 1 or one end of the second rotating member 42 close to the rod body 1, and the other end passes through the interior of the rod body 1 and is fixedly connected to one side of the tail of the swing head 3; the positions where the two connecting wires 43 are connected to the swing head 3 are respectively located on both sides of the swing head 3, and when the axis of the swing head 3 coincides with the axis of the rod body 1, the two connecting wires 43 are symmetrically distributed on both sides of the axis of the rod body 1. In this embodiment, since the structure for winding the connecting wire 43 is a common prior art, it will not be described in detail here, and it is only briefly shown in the drawings.

[0060] Two clearance spaces 12 for the connection lines 43 to pass through are provided inside the rod body 1 corresponding to the two connection lines 43. The rotation of the swing head 3 relative to the rod body 1 can be controlled by controlling the rotation of the first rotating member 41 and the second rotating member 42, so as to realize the swing of the swing head 3. Meanwhile, during the swing of the swing head 3, the two connection lines 43 will keep passing through the corresponding clearance spaces 12 and keep a distance from the inner wall of the corresponding clearance spaces 12. In this embodiment, it is preferred that during the swing of the swing head 3, the portion of the connection line 43 close to the swing head 3 will keep between the swing head 3 and the rod body 1, and will not contact the urethral tissue, so as to further reduce the probability of damaging the urethral tissue during the insertion of the electroresectoscope 5 into the urethra.

[0061] The linkage member 44 is annular in structure and is rotatably mounted on the mounting seat 11 and is located on the side of the mounting seat 11 away from the connecting member 2. The rotation axis of the linkage member 44 coincides with its own axis and the axis of the rod body 1. In this embodiment, the linkage member 44 is preferably mounted inside the mounting seat 11.

[0062] The side of the linkage member 44 close to the connecting member 2 has a gear structure, and its gear structure is distributed along its annular track; the end of the first rotating member 41 close to the rod body 1 and the end of the second rotating member 42 close to the rod body 1 both have gear structures, and the gear structures of the two are the same. The axis of the gear structure on the first rotating member 41 coincides with its own axis, and the axis of the gear structure on the second rotating member 42 also coincides with its own axis, and the gear structure on the linkage member 44 is simultaneously meshed with the gear structure on the first rotating member 41 and the gear structure on the second rotating member 42. At this time, during the rotation of the first rotating member 41 relative to the mounting seat 11, the second rotating member 42 can be driven by the linkage member 44 to rotate synchronously in the opposite direction relative to the mounting seat 11, so that the swing head 3 can be controlled to swing only by controlling the rotation of the first rotating member 41.

[0063] Reference Figure 3 and Figure 4 The operating member 45 is a cylindrical structure as a whole, which is movably connected to the first rotating member 41, and its part will remain located outside the mounting seat 11 during its movement; the movement direction of the operating member 45 is parallel to its own axial direction, and during the movement of the operating member 45, its axis remains coincident with the axis of the first rotating member 41.

[0064] During the movement of the operating member 45 relative to the first rotating member 41, the end of the operating member 45 close to the first rotating member 41 remains inserted into the interior of the first rotating member 41; the end of the operating member 45 close to the first rotating member 41 has a matching portion 451, and the interior of the first rotating member 41 close to the end of the operating member 45 has a matching groove 411 adapted to the matching portion 451. When the matching portion 451 is engaged with the matching groove 411, the operator can control the first rotating member 41 to rotate relative to the mounting seat 11 through the portion of the operating member 45 located outside the mounting seat 11. In this embodiment, the matching portion 451 is preferably a rectangular parallelepiped structure with a square cross-section; in other embodiments, the matching portion 451 may also be other shapes, as long as the relative rotation between the operating member 45 and the first rotating member 41 is limited after the matching portion 451 is engaged with the engaging portion.

[0065] The operating member 45 has limitations in its movement relative to the first rotating member 41 .

[0066] When the operating member 45 moves to the extreme position in the direction close to the first rotating member 41, the matching portion 451 is fully engaged with the matching groove 411, and the operator can directly control the swing head 3 to swing through the operating member 45; and at this time, the part of the operating member 45 located on the outside of the mounting seat 11 is the smallest, which can effectively reduce the probability of the operator accidentally touching the operating member 45 and causing the swing head 3 to swing accidentally.

[0067] When the operating member 45 moves to the extreme position in the direction away from the first rotating member 41, the matching portion 451 will leave the matching groove 411, and the part of the operating member 45 located outside the mounting seat 11 is the largest, which is convenient for the operator to hold the operating member 45 to control the insertion of the electrosurgical resectoscope 5 into the urethra, and acts as a handle during the insertion process to assist the smooth insertion of the electrosurgical resectoscope 5; at the same time, it is convenient for the operator to use the operating member 45 as a handle to control the rotation of the rod body 1 relative to the connecting member 2, and further control the position of the swing head 3 in the urethra; and at this time, the operating member 45 can freely rotate relative to the first rotating member 41 with its own axis as the axis. After the operator accidentally touches the operating member 45, he will be more inclined to drive the operating member 45 to rotate, thereby effectively reducing the influence of the accidental touch on the position state of the swing member in the urethra.

[0068] The positioning member 46 is a rectangular rod-shaped structure as a whole, which is movably mounted on the mounting seat 11 and is located on the side of the operating member 45 close to the connecting member 2; the moving direction of the positioning member 46 is parallel to the axial direction of the rod body 1 and is parallel to its own length direction; the positioning member 46 can move in and out of the side of the mounting seat 11 close to the connecting member 2 during its movement relative to the mounting seat 11, and the side of the connecting member 2 close to the mounting seat 11 has an annularly distributed positioning surface 21, the axis of the positioning surface 21 coincides with the axis of the rod body 1, and the positioning member 46 is aligned with the positioning surface 21 along its own moving direction; when the positioning member 46 contacts and abuts against the positioning surface 21, there is a sufficiently large friction force between the two, and at this time, the friction force between the two will be able to prevent the connecting member 2 from rotating relative to the mounting seat 11. In this embodiment, it is preferred that the side of the connecting member 2 close to the mounting seat 11 has an annular groove, and the positioning surface 21 is distributed on the groove wall away from the mounting seat 11; and it is preferred that the end surface of the positioning member 46 away from the operating member 45 and the positioning surface 21 are both frosted surfaces.

[0069] The elastic member 47 is installed inside the mounting seat 11, and the two ends of the elastic member 47 are fixedly connected to the positioning member 46 and the mounting seat 11 respectively, and can drive the positioning member 46 to move away from the connecting member 2 until the positioning member 46 is completely located inside the mounting seat 11 and remains. In this embodiment, the elastic member 47 is preferably a compression spring.

[0070] The part of the operating member 45 located in the mounting seat 11 has an abutment portion 452 that contacts the positioning member 46. The end of the abutment portion 452 close to the first rotating member 41 has a wedge-shaped structure. The end of the positioning member 46 close to the operating member 45 also has a wedge-shaped structure, and the wedge-shaped structure of the abutment portion 452 is adapted to the wedge-shaped structure of the positioning member 46.

[0071] When the operating member 45 moves to the extreme position in the direction away from the first rotating member 41, the abutment portion 452 will be located on the side of the positioning member 46 away from the first rotating member 41, and at this time, the positioning member 46 will move to the extreme position in the direction away from the connecting member 2 under the action of the elastic member 47, one end of the operating member 45 contacts and abuts against the position between the abutment portion 452 and the matching portion 451, and the other end is located inside the mounting seat 11 and maintains a distance from the positioning surface 21; at this time, in the process of controlling the operating member 45 to move to the extreme position in the direction close to the first rotating member 41, the wedge structure of the abutment portion 452 will contact and abut against the wedge structure of the positioning member 46, and at the same time, it can drive the positioning member 46 to overcome the force of the elastic member 47 and move in the direction close to the positioning surface 21 until the positioning member 46 and the end surface of the positioning surface 21 are in contact and abut against each other; at this time, the operation of the operator controlling the rod body 1 relative to the connecting member 2 through the operating member 45 is limited, which is convenient for the operator to focus on controlling the rotation of the first rotating member 41 through the operating member 45.

[0072] Furthermore, in order to improve the position stability of the operating member 45 when the operator controls the rod body 1 to rotate relative to the connecting member 2 through the operating member 45 , it is preferred that a plurality of limit members 48 are installed on the abutting portion 452 of the operating member 45 .

[0073] A plurality of stoppers 48 are arranged in a circumferential array on the abutment portion 452 with the axis of the operating member 45 as the axis. The stoppers 48 can move relative to the abutment portion 452 along the radial direction of the axis of the abutment portion 452, and can be extended and retracted in and out of the space around the abutment portion 452 during the movement of the stoppers 48. In this embodiment, the stoppers 48 are preferably spring latches, and one end of the latches that enter and exit the space around the abutment portion 452 is a ball head structure; and the stoppers 48 are preferably kept partially in the space around the abutment portion 452 under normal conditions; since spring latches are common prior art, they are not described in detail here, and are only briefly shown in the drawings.

[0074] In the process of controlling the operating member 45 to move toward the direction close to the first rotating member 41 to the extreme position, the wedge-shaped structure of the positioning member 46 will contact and abut against part of the limiting member 48, first causing the limiting member 48 to telescope and move into the abutting portion 452, and finally the force of the wedge-shaped structure of the positioning member 46 on the limiting member 48 is released, and the limiting member 48 telescopes and moves so that part of it is located in the space around the abutting portion 452. At this time, multiple limiting members 48 are all located on the side of the positioning member 46 close to the first rotating member 41 and part of the limiting members 48 can contact and abut against the wedge-shaped structure of the positioning member 46, and at this time, part of the limiting members 48 that are in contact with the wedge-shaped structure of the positioning member 46 cooperate with the wedge-shaped structure of the positioning member 46 to limit the operating member 45, thereby increasing the resistance that the limiting member 48 needs to overcome to move in the direction away from the first rotating member 41 at this time, so as to improve the stability of the operator controlling the rotation of the first rotating member 41 through the operating member 45 at this time.

[0075] Reference Figure 1 and Figure 2 Furthermore, in order to facilitate the operator to control the insertion of the resectoscope 5 into the urethra and to facilitate the operator to control the rotation of the rod body 1 relative to the resectoscope 5 to adjust the position of the swing head 3, a hand-held rod 22 is preferably extended outward from the outer side of the connecting member 2.

[0076] The hand-held rod 22 has a cylindrical structure, and the axis of the hand-held rod 22 is perpendicular to the axis of the connecting member 2, that is, the hand-held rod 22 extends outward in the radial direction of the connecting member 2 so that the operator can hold it with one hand. After the operator holds the hand-held rod 22 with one hand, he can conveniently use the other hand to operate the operating component 4.

[0077] The implementation principle of an obturator for an electric resectoscope in the present application is as follows:

[0078] When the operator inserts the resectoscope 5 into the patient's urethra with the help of the obturator, the operator can hold the hand-held rod 22 with one hand to control the movement of the resectoscope 5, and hold the operating member 45 with the other hand to control the operating assembly 4;

[0079] When it is necessary to control the swing head 3 to swing, the operating member 45 is controlled to move inward so that the matching portion 451 is engaged with the matching groove 411, and then the first rotating member 41 can be controlled to rotate by the operating member 45, and then the second rotating member 42 can be controlled to rotate in the opposite direction and synchronously by the linkage member 44, so as to realize the swing of the swing head 3; at the same time, the positioning member 46 will keep in contact with the end face of the positioning surface 21 during the above process, so as to limit the rotation of the rod body 1 relative to the resectoscope 5, and improve the accuracy of the operator in controlling the swing of the swing head 3;

[0080] When the rod body 1 needs to be controlled to rotate relative to the resectoscope 5 to adjust the position of the swing head 3 in the urethra, the operating member 45 is controlled to move outward so that the matching portion 451 leaves the matching groove 411, and the operating member 45 can be used as a second handle to control the rod body 1 to rotate relative to the resectoscope 5;

[0081] By flexibly controlling the swing head 3 to change the position state, the resectoscope 5 can be conveniently inserted into the patient's urethra with the help of the obturator.

[0082] Embodiment 2:

[0083] Reference Figure 1 and Figure 5 , the difference between this embodiment and embodiment 1 is that the obturator further includes an imaging device 6 capable of capturing images.

[0084] Reference Figure 5 The imaging device 6 is fixedly mounted on the head of the swing head 3, and can capture images in front of the swing head 3. In this embodiment, the imaging device 6 is preferably fixedly mounted on the head of the swing head 3 in an embedded manner, so that the surface of the swing head 3 is kept as smooth as possible.

[0085] The imaging device 6 is connected to the external image display device signal. When the operator inserts the resectoscope 5 into the patient's urethra, the operator can observe the internal situation in real time through the imaging device 6, thereby improving the accuracy of the operation and reducing the risk of misoperation due to limited vision during the process. In this embodiment, since the imaging device 6 and the image display device with the above functions are both common existing technologies, they are not described in detail here. The imaging device 6 is only briefly shown in the accompanying drawings, and the image display device is omitted.

[0086] The implementation principle of an obturator for an electric resectoscope in the present application is as follows:

[0087] When the operator inserts the resectoscope 5 into the patient's urethra with the help of the obturator, the operator can judge the situation inside the patient's urethra by observing the images collected by the imaging device 6 in real time, thereby further facilitating the smooth insertion of the resectoscope 5.

[0088] Embodiment 3:

[0089] Reference Figure 1 and Figure 6 The difference between this embodiment and embodiment 1 is that the obturator further includes a plurality of pressure sensors 7 capable of monitoring pressure.

[0090] Reference Figure 6 , a plurality of pressure sensors 7 are fixedly mounted on the surface of the circumference of the swing head 3, and can monitor the pressure of the swing head 3 on the urethral tissue after the swing head 3 contacts the urethral tissue. In this embodiment, it is preferred that a plurality of pressure sensors 7 are mounted on the swing head 3, and the plurality of pressure sensors 7 are evenly distributed on the surface of the swing head 3; and it is preferred that the pressure sensors 7 are fixedly mounted on the swing head 3 in an embedded manner, so that the surface of the swing head 3 is kept as smooth as possible.

[0091] The multiple pressure sensors 7 are all connected to the external numerical display device signal. When the operator inserts the resectoscope 5 into the patient's urethra, the multiple pressure sensors 7 can monitor the pressure applied by the swing head 3 to different positions of the urethral tissue in real time, so that the operator can adjust the position of the swing head 3 in time according to the monitoring value, so that the obturator can maintain the best closed state in the urethra and prevent leakage or tissue damage caused by excessive compression or insufficient force. In this embodiment, since the pressure sensor 7 and the numerical display device with the above functions are both common existing technologies, they are not described here. The pressure sensor 7 is only briefly represented in the accompanying drawings and the numerical display device is omitted.

[0092] The implementation principle of an obturator for an electric resectoscope in the present application is as follows:

[0093] When the operator inserts the resectoscope 5 into the patient's urethra with the help of the obturator, the operator can judge whether the position of the swing head 3 inside the patient's urethra meets the requirements by observing the monitoring values ​​of several pressure sensors 7 in real time. At the same time, it can assist the operator to control the position of the swing head 3, further facilitating the smooth insertion of the resectoscope 5.

[0094] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An obturator for a resectoscope, characterized in that: It comprises a rod body (1), a connecting piece (2), a swing head (3) and an operating assembly (4); The swing head (3) and the connecting piece (2) are respectively arranged at two ends of the rod body (1), and the connecting piece (2) is detachably connected to the inner sheath (51) of the resectoscope (5); after the connecting piece (2) is connected to the inner sheath (51), the rod body (1) is penetrated by the inner sheath (51), and the swing head (3) is located on a side of the inner sheath (51) away from the connecting piece (2); The swing head (3) is rotatably connected to the rod body (1), and the rotation axis of the swing head (3) is perpendicular to the length direction of the rod body (1); The operating assembly (4) comprises a first rotating member (41), a second rotating member (42) and two connecting lines (43); The rod body (1) has a mounting seat (11) on a side of the connecting member (2) facing away from the swing head (3); the first rotating member (41) and the second rotating member (42) are both arranged on the mounting seat (11) and are both rotatably connected to the rod body (1); and the rotation axis of the first rotating member (41) and the rotation axis of the second rotating member (42) are both perpendicular to the length direction of the rod body (1); A clearance space (12) is correspondingly provided inside the rod body (1), the connecting line (43) passes through the clearance space (12), two ends of one connecting line (43) are respectively connected to the first rotating member (41) and one side of the swing head (3), and two ends of the other connecting line (43) are respectively connected to the second rotating member (42) and the other side of the swing head (3); the connecting line (43) can be wound around the first rotating member (41) and the second rotating member (42), and the change in length of the connecting line (43) can drive the swing head (3) to rotate; The connecting member (2) is an annular structure, the connecting member (2) is rotatably connected to the rod body (1), and the rotation axis of the connecting member (2) coincides with its own axis and the axis of the rod body (1); The operating assembly (4) comprises an operating member (45) and a linkage member (44); The operating member (45) is connected to the first rotating member (41); the first rotating member (41) and the second rotating member (42) are both located in the mounting seat (11); and the operating member (45) extends outwardly along the radial direction of the rod body (1); the linkage member (44) is an annular structure; the linkage member (44) is rotatably connected to the mounting seat (11); the rotation axis of the linkage member (44) coincides with its own axis and is parallel to the length direction of the rod body (1); The operating member (45) is movably connected to the first rotating member (41), and the moving direction of the operating member (45) is parallel to the rotation axis of the first rotating member (41); The end of the operating member (45) close to the first rotating member (41) has a matching portion (451), and the end of the first rotating member (41) close to the operating member (45) is provided with a matching groove (411) adapted to the matching portion (451); during the movement of the operating member (45), the matching portion (451) can be engaged with the matching groove (411), and at this time, the operating member (45) can drive the first rotating member (41) to rotate; The operating assembly (4) further comprises a positioning member (46) and an elastic member (47); The positioning member (46) is movably connected to the mounting seat (11), and the movement direction of the positioning member (46) is parallel to the length direction of the rod body (1); the connecting member (2) has a positioning surface (21) on a side close to the mounting seat (11), and the friction between the positioning member (46) and the positioning surface (21) is large, and when the positioning member (46) moves in a direction close to the connecting member (2) to an extreme position, the positioning member (46) contacts and abuts against the positioning surface (21); The two ends of the elastic member (47) are respectively connected to the positioning member (46) and the mounting seat (11), and are capable of driving the positioning member (46) to move in a direction away from the connecting member (2) to an extreme position and maintaining the position; the operating member (45) has a wedge-shaped abutment portion (452) on one side close to the positioning member (46), and the end of the positioning member (46) close to the operating member (45) has a wedge-shaped structure; when the matching portion (451) is engaged with the matching groove (411), the abutment portion (452) contacts and abuts against the positioning member (46), and the positioning member (46) contacts and abuts against the positioning surface (21).

2. The obturator for an electric resectoscope according to claim 1, characterized in that: One side of the linkage member (44) has a gear structure, and one end of the first rotating member (41) and the second rotating member (42) close to the linkage member (44) also has a gear structure, and the linkage member (44) is in gear meshing engagement with the first rotating member (41) and the second rotating member (42); when the first rotating member (41) is controlled to rotate by the operating member (45), the first rotating member (41) can drive the second rotating member (42) to rotate synchronously and in the opposite direction through the linkage member (44).

3. The obturator for an electric resectoscope according to claim 1, characterized in that: When the operating member (45) moves to an extreme position in a direction approaching the first rotating member (41), the matching portion (451) is engaged with the matching groove (411); when the operating member (45) moves to an extreme position in a direction away from the first rotating member (41), the operating member (45) can rotate relative to the first rotating member (41), and the rotation axis of the operating member (45) coincides with the rotation axis of the first rotating member (41).

4. The obturator for an electric resectoscope according to claim 1, characterized in that: The operating member (45) is further provided with a plurality of limiting members (48) on the abutting portion (452), and the plurality of limiting members (48) are distributed in a circular array on the abutting portion (452) with the axis of the operating member (45) as the axis; The limiting member (48) is capable of telescopic movement in and out of the abutment portion (452); when the operating member (45) moves to an extreme position in a direction away from the first rotating member (41), the plurality of limiting members (48) will contact the wedge-shaped structure of the positioning member (46) and be located on a side of the positioning member (46) close to the first rotating member (41).

5. The obturator for an electric resectoscope according to claim 1, characterized in that: A hand-held rod (22) extends outwardly from the connecting piece (2) along its own radial direction.

6. The obturator for an electric resectoscope according to claim 1, characterized in that: It also comprises an imaging device (6), and the imaging device (6) is arranged at an end of the swing head (3) away from the rod body (1).

7. The obturator for an electric resectoscope according to claim 1, characterized in that: It also includes a plurality of pressure sensors (7), and the pressure sensors are arranged on the surface of the oscillating head (3).

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