Sampling specimen bag for transurethral bladder operation

Abstract

The invention relates to a sampling specimen bag for transurethral bladder surgery, and relates to the technical field of medical instruments, the sampling specimen bag for transurethral bladder surgery comprises an outer tube, an inner tube, a moving rod, an elastic piece, a specimen bag body, a locking mechanism and a driving mechanism; the inner pipe is rotationally connected into the outer pipe through a driving mechanism; the moving rods are coaxially arranged in the inner pipe in a penetrating mode, part of the moving rods are located in the inner pipe, and the other part of the moving rods are located in the outer pipe; the locking mechanism is arranged in the inner pipe and used for fixing the inner pipe and the moving rod. The elastic piece is arranged at the end part of the moving rod; the specimen bag body is arranged on the elastic piece; the elastic piece has an unfolded state and a contracted state; when the elastic piece is in an unfolded state, one end, with the elastic body, of the moving rod extends out of the outer tube, and the specimen bag body is opened; when the elastic piece is in a contraction state, one end of the movable rod with the elastic body is positioned in the outer pipe, and the specimen bag body is closed. The specimen storage box has the effect of conveniently placing specimens.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a sampling specimen bag for transurethral bladder surgery. Background Art

[0002] Specimen bags are often used when removing patient tissue from the patient's body. With the development and improvement of medical technology, specimen bags are now widely used in various abdominal surgeries, such as the removal of patient tissue in urethral bladder surgery. In the related technology, when removing patient tissue from the patient's body through a specimen bag. Medical personnel generally first put the specimen bag into the patient's abdominal cavity through an operating instrument. At this time, the specimen bag is in an open state. Then the medical personnel operate the taking instrument to place the patient's abdominal tissue in the patient's abdominal cavity into the specimen bag. Finally, the operating instrument pulls the specimen bag out. When the specimen bag moves out of the patient's body, it will contact the operating instrument, causing the specimen bag to shrink and then be stored in the operating instrument. The taking instrument is taken out to complete the removal of the patient's tissue from the patient's body.

[0003] With respect to the above-mentioned related technologies, the following defects exist: 1. When taking out the patient tissue from the patient's body, the patient tissue may not be cleaned thoroughly, and the specimen bag needs to be opened again to place the patient tissue, but the related technology cannot achieve this, and the new specimen bag can only be placed back into the patient's body to take out the patient tissue again, which will cause secondary harm to the patient and reduce the efficiency of taking out the patient tissue; 2. When the specimen bag enters the patient's body, the opening of the specimen bag always remains in one position. When there is patient tissue on the other side of the specimen bag opening and it needs to be placed on the other side, the specimen bag needs to be taken out and then placed back into the patient's body to place the affected tissue, which will also cause secondary harm to the patient. Summary of the invention

[0004] In order to facilitate the placement of specimens into a specimen bag, the present application provides a sampling specimen bag for transurethral bladder surgery.

[0005] In the first aspect, the present application provides a sampling specimen bag for transurethral bladder surgery, which adopts the following technical solution: A sampling specimen bag for transurethral bladder surgery comprises an outer tube, an inner tube, a moving rod, an elastic member, a specimen bag body, a locking mechanism and a driving mechanism; the inner tube is rotatably connected to the outer tube by the driving mechanism; the driving mechanism is used to drive the inner tube to move so that the inner tube rotates in the outer tube; the moving rod is coaxially arranged in the inner tube, wherein a part of the moving rod is located in the inner tube and another part of the moving rod is located in the outer tube; the locking mechanism is arranged in the inner tube and is used to fix the inner tube and the moving rod; the elastic member is arranged at the end of the moving rod; the specimen bag body is arranged on the elastic member; the elastic member has an expanded state and a contracted state; when the elastic member is in the expanded state, one end of the moving rod having the elastic member extends out of the outer tube, and the specimen bag body is opened; when the elastic member is in the contracted state, one end of the moving rod having the elastic member is located in the outer tube, and the specimen bag body is closed.

[0006] By adopting the above technical solution, when it is necessary to take out the patient tissue in the patient's body, the moving rod is pushed, and the moving rod moves in the inner tube. The movement of the moving rod drives the elastic body to move, and the elastic body extends out of the outer tube. The elastic body is in an expanded state, and the elastic specimen bag body opens at this time, and the medical staff puts the patient tissue into the specimen bag body; when the patient tissue is located on the other side of the opening of the specimen bag body (the conventional practice is to take out the specimen bag body and replace it), the locking mechanism is opened, and the locking mechanism fixes the inner tube and the moving rod. The inner tube and the moving rod are fixed, and the driving mechanism is opened. The driving mechanism drives the inner tube to move in the outer tube, and the inner tube rotates in the outer tube. The rotation of the inner tube drives the rotation of the moving rod, and the rotation of the moving rod drives the rotation of the elastic member. At this time, the opening of the specimen bag body is located at another patient tissue position, and the patient tissue is placed in the specimen bag body. The inner tube and the moving rod are fixed by a locking mechanism, and the driving mechanism is turned on. The driving mechanism drives the inner tube to rotate in the outer tube, and the inner tube drives the moving rod to rotate. The rotation of the moving rod drives the elastic member to rotate, so that the opening of the specimen bag body can be driven to rotate adjustably and smoothly, making it convenient for medical personnel to place the patient's tissue into the specimen bag body.

[0007] Optionally, the inner tube and the outer tube have a accommodating cavity, and the driving mechanism is arranged in the accommodating cavity; the driving mechanism includes a driving rack, a driving gear, a driving rotating rod and a driving limit block; the driving rack is slidably arranged in the accommodating cavity; the driving gear is arranged in the accommodating cavity through the driving rotating rod, and the driving rack is meshed with the driving gear; wherein the driving rotating rod is rotatably connected to the outer tube, and the axial direction of the driving rotating rod is perpendicular to the movement direction of the driving rack; the driving limit block is arranged between the inner tube and the outer tube, and the inner tube has an arc groove, and the driving limit block is slidably connected to the side wall of the arc groove.

[0008] By adopting the above technical solution, when it is necessary to drive the inner tube to move, the driving rod is rotated, the driving rod rotates to drive the driving gear to rotate, the driving gear rotates to drive the driving rack to slide, the driving rack slides to drive the inner tube to move, and with the cooperation of the driving limit block, the inner tube rotates in the outer tube, thereby achieving the purpose of driving the inner tube to move.

[0009] Optionally, the locking mechanism includes a plurality of first clamping blocks evenly spaced along the inner wall of the inner tube, a second clamping block provided on the movable rod, and a clamping member; there is a gap between adjacent first clamping blocks for the second clamping block to pass through; the clamping member is connected to the inner tube, and is used to drive the second clamping block to move so that the first clamping block and the second clamping block are clamped against each other.

[0010] By adopting the above technical solution, when it is necessary to fix the moving rod and the inner tube, the moving rod is pressed, and the movement of the moving rod drives the second clamping block to move, and the second clamping block contacts the clamping piece. Under the action of the clamping piece, the second clamping block moves toward the first clamping block, and the first clamping block and the second clamping block are clamped, thereby achieving the purpose of fixing the moving rod and the inner tube; when it is necessary to separate the moving rod and the inner tube, the moving rod is rotated, and the moving rod drives the second clamping block to move, and the second clamping block is located in the gap between the adjacent first clamping blocks. At this time, the moving rod is separated from the inner tube, which is convenient for realizing the sliding movement of the moving rod in the inner tube.

[0011] Optionally, the inner tube has an inlet end and an outlet end arranged along its axial direction; the first clamping block has a recessed portion on the side facing the outlet end; the second clamping block has a raised portion on the side facing the inlet end, and the recessed portion is arranged in coordination with the raised portion.

[0012] By adopting the above technical solution, the moving rod is pressed, and the moving rod drives the second clamping block to contact the clamping piece. Under the action of the clamping piece, the second clamping block moves toward the first clamping block, and the movement of the second clamping block drives the protrusion to move. The protrusion approaches the first clamping block, and the protrusion extends into the recessed portion, thereby realizing the clamping of the first clamping block and the second clamping block, thereby realizing the fixation between the inner tube and the moving rod.

[0013] Optionally, the clamping member includes a clamping spring; the clamping spring is coaxially arranged in the inner tube, and one end of the clamping spring is connected to the outlet end; the moving rod is passed through the clamping spring, and the clamping spring has a compressed state; when the clamping spring is in the compressed state, the other end of the clamping spring is clamped against the second clamping block, so that the protrusion set on the second clamping block is clamped against the recessed portion set on the first clamping block.

[0014] By adopting the above technical solution, the moving rod is pushed, and the moving rod drives the second clamping block to move. The second clamping block is close to the clamping spring. At this time, the clamping spring is in a compressed state. Under the action of the clamping spring, the clamping spring drives the second clamping block to move, and the second clamping block is clamped against the second clamping block, thereby achieving the purpose of driving the moving rod to move, and then achieving the purpose of clamping the second clamping block with the first clamping block.

[0015] Optionally, a translation mechanism is also arranged between the driving mechanism and the side wall of the outer tube, and the driving mechanism and the inner tube are both connected to the translation mechanism; the translation mechanism includes a translation plate, a translation rack and a translation gear; the inner tube is movably connected to the translation plate; the translation plate is slidably connected to the outer tube, the translation rack is arranged on the translation plate, and part of the translation rack extends out of the outer tube; the translation gear is rotatably connected to the outer tube, and the translation gear is meshed with the translation rack.

[0016] By adopting the above technical solution, when it is necessary to remove patient tissue from patients at different depths (since the moving rod is provided with a second clamping block, the second clamping block will contact the clamping spring, so that the movement range of the moving rod is only within a certain interval, resulting in inconvenience in sampling at patient positions at different depths), the translation gear is rotated, and the rotation of the translation gear drives the movement of the translation rack, and the movement of the translation rack drives the movement of the translation plate, and the movement of the translation plate drives the driving mechanism and the inner tube to move, thereby driving the inner tube to different positions in the outer tube, thereby facilitating the removal of patient tissue at patient positions at different depths.

[0017] Optionally, the translation mechanism further includes a knob for driving the translation gear to rotate.

[0018] By adopting the above technical solution, the knob is turned, and the knob drives the translation gear to rotate. At the same time, a pointer can be set on the knob, and scale lines can be set on the outer tube. The knob drives the pointer set thereon to move, and the pointer cooperates with the scale lines, so that the position of the inner tube in the outer tube can be accurately adjusted, thereby achieving the purpose of accurately placing the specimen bag body at the position of the patient's tissue, preventing the specimen bag body from entering the patient's body too short and requiring multiple adjustments, wasting time, or the specimen bag body from entering the patient's body too much, causing damage to the patient.

[0019] Optionally, one end of the outer tube has an operating handle.

[0020] By adopting the above technical solution, when medical personnel remove the patient's diseased tissue, the medical personnel insert their fingers into the operating handle to operate; the set operating handle can facilitate the medical personnel to take the outer tube and facilitate the medical personnel to remove the patient's tissue.

[0021] Optionally, the other end of the outer tube has a contraction portion, and the contraction portion is used to enable the elastic member to quickly achieve a contracted state.

[0022] By adopting the above technical solution, when it is necessary to take out the specimen bag containing the patient's tissue, the moving rod is pulled, and the moving rod drives the elastic part to move. The elastic part contacts the contraction part, and the elastic part can be quickly compressed under the action of the contraction part, so that the specimen bag body can be quickly closed, which helps to improve the efficiency of medical staff in removing patient tissues.

[0023] Optionally, one end of the moving rod away from the elastic member has a limiting portion, and the limiting portion can contact the end of the outer tube.

[0024] By adopting the above technical solution, the moving rod is pushed, and the moving rod drives the limiting part to move. The limiting part contacts and presses against the end of the outer tube, so that the moving rod can no longer move forward, thereby achieving the purpose of limiting the moving rod to the maximum, which helps to reduce the phenomenon of excessive pushing of the moving rod and possible harm to the patient caused by the moving rod.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The inner tube and the moving rod are fixed by a locking mechanism, and the driving mechanism is turned on. The driving mechanism drives the inner tube to rotate in the outer tube, and the inner tube drives the moving rod to rotate. The rotation of the moving rod drives the elastic member to rotate, so that the opening of the specimen bag body can be driven to rotate adjustably and smoothly, which is convenient for medical personnel to put the patient tissue into the specimen bag body.

[0026] 2. By pressing the moving rod, the movement of the moving rod drives the second clamping block to move, and the second clamping block contacts the clamping piece. Under the action of the clamping piece, the second clamping block moves toward the first clamping block, and the first clamping block and the second clamping block are clamped together to achieve the purpose of fixing the moving rod and the inner tube; when it is necessary to separate the moving rod and the inner tube, the moving rod is rotated, and the moving rod drives the second clamping block to move. The second clamping block is located in the gap between the adjacent first clamping blocks. At this time, the moving rod is separated from the inner tube, which is convenient for realizing the sliding movement of the moving rod in the inner tube.

[0027] 3. By rotating the translation gear, the translation gear drives the translation rack to move, the translation rack movement drives the translation plate movement, the translation plate movement drives the driving mechanism and the inner tube movement, so as to drive the inner tube to different positions in the outer tube, thereby facilitating the removal of patient tissue at different depths of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 This is a schematic diagram of a sampling specimen bag used for transurethral bladder surgery in the present application.

[0030] Figure 2 This is a structural schematic diagram of another angle of view of a sampling specimen bag used for transurethral bladder surgery in the present application.

[0031] Figure 3 It is a partial structural schematic diagram of a sampling specimen bag used for transurethral bladder surgery in the present application.

[0032] Figure 4 yes Figure 3 Magnified view of part A.

[0033] Figure 5 yes Figure 3 Magnified view of part B.

[0034] Figure 6 It is a cross-sectional view of a sampling specimen bag used for transurethral bladder surgery of the present application.

[0035] Figure 7 yes Figure 6 Magnified view of part C.

[0036] Figure 8 yes Figure 7 Magnified view of part D.

[0037] Fig. 9 yes Figure 7 Enlarged view of part E.

[0038] Explanation of the reference numerals in the accompanying drawings: 1. outer tube; 11. operating handle; 12. contraction portion; 2. inner tube; 21. inlet end; 22. outlet end; 23. arc groove; 3. moving rod; 31. limiting portion; 4. elastic member; 5. specimen bag body; 6. locking mechanism; 61. first clamping block; 611. recessed portion; 62. second clamping block; 621. raised portion; 63. pressing member; 631. pressing spring; 7. driving mechanism; 71. driving rack; 72. driving gear; 73. driving rotating rod; 74. driving limiting block; 8. translation mechanism; 81. translation plate; 82. translation rack; 83. translation gear; 84. knob. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-9This application is described in further detail.

[0040] The embodiment of the present application discloses a sampling specimen bag for transurethral bladder surgery.

[0041] See also Figures 1 to 3 , Figure 6 and Figure 7 , a sampling specimen bag for transurethral bladder surgery, comprising an outer tube 1, an inner tube 2, a moving rod 3, an elastic member 4, a specimen bag body 5, a locking mechanism 6 and a driving mechanism 7; the inner tube 2 is rotatably connected to the outer tube 1 through the driving mechanism 7; the driving mechanism 7 is used to drive the inner tube 2 to move so that the inner tube 2 can rotate in the outer tube 1; the moving rod 3 is coaxially arranged in the inner tube 2, wherein part of the moving rod 3 is located in the inner tube 2 and the other part of the moving rod 3 is located in the outer tube 1; the locking mechanism 6 is used to fix the inner tube 2 and the moving rod 3; the elastic member 4 is installed at the end of the moving rod 3; the specimen bag body 5 is sleeved on the elastic member 4; the elastic member 4 has an expanded state and a contracted state; when the elastic member 4 is in the expanded state, one end of the moving rod 3 with the elastic member 4 extends out of the outer tube 1, and the specimen bag body 5 is opened; when the elastic member 4 is in the contracted state, one end of the moving rod 3 with the elastic member 4 is located in the outer tube 1, and the specimen bag body 5 is closed. It can be understood that when the specimen bag body 5 needs to be rotated, that is, when the opening direction of the specimen bag body 5 needs to be changed, the inner tube 2 and the movable rod 3 can be fixed by the locking mechanism 6, and the driving mechanism 7 drives the inner tube 2 to rotate in the outer tube 1. In this way, the opening direction of the specimen bag body 5 can be adjusted, so that the specimen bag body 5 does not need to be taken out to achieve the removal of affected tissues in different directions, thereby reducing secondary damage to the patient and also helping to improve the efficiency of removing the affected tissues.

[0042] It should be noted that, in the embodiment of the present disclosure, the elastic member 4 may be a metal wire, which is in an unfolded state under normal conditions, that is, it can open the specimen bag body 5 .

[0043] In the embodiment of the present disclosure, when the patient's affected tissue needs to be removed, the moving rod 3 can be pushed into the designated position for taking the affected tissue. When the pushing rod is extended out of the outer tube 1, the elastic member 4 is in an expanded state, and the movement of the elastic member 4 drives the specimen bag body 5 to move. The specimen bag body 5 is expanded, and the affected tissue can be placed in the specimen bag body 5. When the affected tissue is completely in the specimen bag body 5, the moving rod 3 is pulled out, and the moving rod 3 drives the elastic member 4 to move. The elastic member 4 contacts the end of the outer tube 1, and the elastic member 4 gradually contracts. The specimen bag body 5 is accommodated in the outer tube 1, and the affected tissue can be taken out.

[0044] See 3. Figure 5 , Figure 8 , Fig. 9In some embodiments of the present disclosure, the inner tube 2 and the outer tube 1 have a accommodating cavity, and the driving mechanism 7 is installed in the accommodating cavity. As an example, the driving mechanism 7 includes a driving rack 71, a driving gear 72, a driving rotating rod 73 and a driving limit block 74; the driving rack 71 is arranged in the accommodating cavity, wherein the movement direction of the driving rack 71 is axial to the inner tube 2; the driving gear 72 is installed in the accommodating cavity through the driving rotating rod 73, and the driving rack 71 is meshed with the driving gear 72; wherein the driving rotating rod 73 is rotatably connected to the outer tube 1, and the axial direction of the driving rotating rod 73 is perpendicular to the movement direction of the driving rack 71; the driving limit block 74 is arranged between the inner tube 2 and the outer tube 1, and the inner tube 2 has an arc groove 23, and the driving limit block 74 is slidably connected to the side wall of the arc groove 23. Specifically, the driving rod 73 can be rotated to drive the driving gear 72 to rotate. The rotation of the driving gear 72 drives the driving rack 71 to slide. The sliding of the driving rack 71 drives the inner tube 2 to slide in the outer tube 1. During the sliding process of the inner tube 2, the driving limit block 74 moves in the arc groove 23, so that the inner tube 2 rotates in the outer tube 1, thereby achieving the purpose of driving the inner tube 2 to rotate.

[0045] See 6. Figure 7 , Fig. 9 In some embodiments of the present disclosure, the locking mechanism 6 includes a plurality of first clamping blocks 61 evenly spaced along the inner wall of the inner tube 2, a second clamping block 62 provided on the movable rod 3, and a clamping member 63; there is a gap between adjacent first clamping blocks 61 for the second clamping blocks 62 to pass through; the clamping member 63 is connected to the inner tube 2, and is used to drive the second clamping block 62 to move so that the first clamping block 61 and the second clamping block 62 are tightly pressed against each other.

[0046] It can be understood that in the embodiment of the present disclosure, there is no specific restriction on the number of the first clamping blocks 61 and the second clamping blocks 62, as long as it can be achieved that in the first state, under the action of the clamping member 63, the first clamping block 61 and the second clamping block are clamped to fix the moving rod 3 and the inner tube 2, and in the second state, under the action of the clamping member 63, the second clamping block 62 can pass through the gap between adjacent first clamping blocks 61, so as to facilitate the sliding movement of the moving rod 3 in the inner tube 2.

[0047] In some embodiments of the present disclosure, the inner tube 2 has an inlet end 21 and an outlet end 22 arranged along its axial direction; the first clamping block 61 has a recessed portion 611 on the side facing the outlet end 22; the second clamping block 62 has a protruding portion 621 on the side facing the inlet end 21, and the recessed portion 611 and the protruding portion 621 are arranged in coordination. With such an arrangement, when it is necessary to fix the moving rod 3 and the inner tube 2, under the action of the abutting member 63, the second clamping block 62 moves toward the first clamping block 61, so that the protruding portion 621 approaches the recessed portion 611, and when the protruding portion 621 extends into the recessed portion 611, the fixing of the moving rod 3 and the inner tube 2 is achieved. The provided protruding portion 621 and the recessed portion 611 can improve the fixing effect of the moving rod 3 and the inner tube 2, thereby improving the safety of taking the affected tissue.

[0048] See also Figure 7 As an example, the clamping member 63 may include a clamping spring 631; the clamping spring 631 is coaxial with the inner tube 2, and one end of the clamping spring 631 is connected to the outlet end 22; the moving rod 3 is passed through the clamping spring 631, and the clamping spring 631 is in a compressed state; when the clamping spring 631 is in a compressed state, the other end of the clamping spring 631 is clamped against the second clamping block 62, so that the protrusion 621 set on the second clamping block 62 is clamped against the recessed portion 611 set on the first clamping block 61, thereby realizing the fixation between the inner tube 2 and the moving rod 3.

[0049] Due to the presence of the pressing spring 631, the travel of the moving rod 3 is within a specific range. In order to facilitate the removal of the affected tissue in the deeper urethra, in the embodiment of the present disclosure, a translation mechanism 8 is further provided between the driving mechanism 7 and the side wall of the outer tube 1, and the driving mechanism 7 and the inner tube 2 are both connected to the translation mechanism 8. The translation mechanism 8 can be provided to allow the driving mechanism 7 and the inner tube 2 to be located at different positions in the outer tube 1. With such a configuration, when it is necessary to remove the affected tissue in the deeper urethra, the translation mechanism 8 can be adjusted, and the translation mechanism 8 allows the driving mechanism 7 and the inner tube 2 to move in the outer tube 1, thereby increasing the travel of the movement.

[0050] See also Figure 3 , Figure 4 , Figure 8In some embodiments of the present disclosure, the translation mechanism 8 includes a translation plate 81, a translation rack 82, and a translation gear 83; the inner tube 2 is movably connected to the translation plate 81, and it can be understood that the inner tube 2 can also rotate on the translation plate 81. Further, in the embodiments of the present disclosure, the translation plate 81 can be set as an arc-shaped plate; the translation plate 81 is slidably connected to the outer tube 1, and the translation rack 82 is installed on the translation plate 81, and part of the translation rack 82 extends out of the outer tube 1; the translation gear 83 is rotationally connected to the outer tube 1, and the translation gear 83 is meshed with the translation rack 82. In this way, the translation gear 83 is rotated, and the translation rotation drives the translation rack 82 to move, and the movement of the translation rack 82 drives the moving plate to move, and the moving plate drives the driving mechanism 7 and the inner tube 2 to move, so as to achieve the purpose of adjusting the driving mechanism 7 and the inner tube 2 to different positions in the outer tube 1.

[0051] Furthermore, the translation mechanism 8 also includes a knob 84 for driving the translation gear 83 to rotate; a pointer may be provided on the knob 84, and scale lines may be provided on the outer wall of the outer tube 1 (this is not specifically shown in the drawings of this application). Through the pointer provided on the knob 84 and the scale lines provided on the outer tube 1, the position of the inner tube 2 in the outer tube 1 can be precisely adjusted, thereby improving the accuracy of the operation.

[0052] In some embodiments of the present disclosure, one end of the outer tube 1 has an operating handle 11. The operating handle 11 is provided to facilitate the operation of medical personnel and improve the comfort of medical personnel (see Figure 1 ).

[0053] In some embodiments of the present disclosure, the other end of the outer tube 1 has a contraction portion 12, and the contraction portion 12 is used to quickly shrink the elastic member 4. When the specimen bag body 5 needs to be retracted, the push rod is pulled, and the push rod drives the specimen bag body 5 to move, and the elastic member 4 first contacts the telescopic portion. Under the action of the contraction portion 12, the elastic member 4 can be quickly contracted, which improves the retraction time of the specimen bag body 5, thereby improving the efficiency of taking the affected tissue (see Figure 1 ).

[0054] In some embodiments of the present disclosure, the end of the moving rod 3 away from the elastic member 4 has a limiting portion 31, and the limiting portion 31 can contact the end of the outer tube 1. The limiting portion 31 can prevent the medical staff from pushing the moving rod 3 too much, thereby preventing the moving rod 3 from causing secondary damage to the patient due to the excessive pushing, and further improving the safety of use (see Figure 1 ).

[0055] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A sampling specimen bag for transurethral bladder surgery, comprising an outer tube (1), an inner tube (2), a moving rod (3), an elastic member (4), a specimen bag body (5), a locking mechanism (6) and a driving mechanism (7); the inner tube (2) is rotatably connected to the outer tube (1) via the driving mechanism (7); the driving mechanism (7) is used to drive the inner tube (2) to move so that the inner tube (2) rotates in the outer tube (1); the moving rod (3) is coaxially penetrated in the inner tube (2), wherein: Part of the moving rod (3) is located in the inner tube (2), and the other part of the moving rod (3) is located in the outer tube (1); the locking mechanism (6) is arranged in the inner tube (2) and is used to fix the inner tube (2) and the moving rod (3); the elastic member (4) is arranged at the end of the moving rod (3); the specimen bag body (5) is arranged on the elastic member (4); the elastic member (4) has an expanded state and a contracted state; when the elastic member (4) is in the expanded state, one end of the moving rod (3) having the elastic member (4) extends out of the outer tube (1), and the specimen bag body (5) is opened; when the elastic member (4) is in the contracted state, one end of the moving rod (3) having the elastic member (4) is located in the outer tube (1), and the specimen bag body (5) is closed.

2. A sampling specimen bag for transurethral bladder surgery according to claim 1, characterized in that: The inner tube (2) and the outer tube (1) have a receiving cavity, and the driving mechanism (7) is arranged in the receiving cavity; the driving mechanism (7) comprises a driving rack (71), a driving gear (72), a driving rotating rod (73) and a driving limiting block (74); the driving rack (71) is slidably arranged in the receiving cavity; the driving gear (72) is arranged in the receiving cavity through the driving rotating rod (73), and the driving rack (71) is meshed with the driving gear (72); wherein the driving rotating rod (73) is rotatably connected to the outer tube (1), and the axial direction of the driving rotating rod (73) is perpendicular to the moving direction of the driving rack (71); the driving limiting block (74) is arranged between the inner tube (2) and the outer tube (1), the inner tube (2) has an arc groove (23), and the driving limiting block (74) is slidably connected to the side wall of the arc groove (23).

3. A sampling specimen bag for transurethral bladder surgery according to claim 1, characterized in that: The locking mechanism (6) comprises a plurality of first clamping blocks (61) evenly arranged along the inner wall of the inner tube (2), a second clamping block (62) arranged on the movable rod (3), and a pressing member (63); there is a gap between adjacent first clamping blocks (61) for the second clamping blocks (62) to pass through; the pressing member (63) is connected to the inner tube (2) and is used to drive the second clamping block (62) to move so that the first clamping block (61) and the second clamping block (62) are pressed against each other.

4. A sampling specimen bag for transurethral bladder surgery according to claim 3, characterized in that: The inner tube (2) has an inlet end (21) and an outlet end (22) arranged along its axial direction; the first clamping block (61) has a recessed portion (611) on a side facing the outlet end (22); the second clamping block (62) has a raised portion (621) on a side facing the inlet end (21), and the recessed portion (611) and the raised portion (621) are arranged in a coordinated manner.

5. A sampling specimen bag for transurethral bladder surgery according to claim 4, characterized in that: The clamping member (63) includes a clamping spring (631); the clamping spring (631) is coaxially arranged in the inner tube (2), and one end of the clamping spring (631) is connected to the outlet end (22); the moving rod (3) is passed through the clamping spring (631), and the clamping spring (631) has a compressed state; when the clamping spring (631) is in the compressed state, the other end of the clamping spring (631) is pressed against the second clamping block (62), so that the protrusion (621) provided on the second clamping block (62) is pressed against the recessed portion (611) provided on the first clamping block (61).

6. A sampling specimen bag for transurethral bladder surgery according to claim 1, characterized in that: A translation mechanism (8) is also provided between the driving mechanism (7) and the side wall of the outer tube (1); the driving mechanism (7) and the inner tube (2) are both connected to the translation mechanism (8); the translation mechanism (8) comprises a translation plate (81), a translation rack (82) and a translation gear (83); the inner tube (2) is movably connected to the translation plate (81); the translation plate (81) is slidably connected to the outer tube (1), the translation rack (82) is provided on the translation plate (81), and a portion of the translation rack (82) extends out of the outer tube (1); the translation gear (83) is rotatably connected to the outer tube (1), and the translation gear (83) is meshed with the translation rack (82).

7. A sampling specimen bag for transurethral bladder surgery according to claim 6, characterized in that: The translation mechanism (8) further comprises a knob (84) for driving the translation gear (83) to rotate.

8. A sampling specimen bag for transurethral bladder surgery according to claim 1, characterized in that: One end of the outer tube (1) is provided with an operating handle (11).

9. A sampling specimen bag for transurethral bladder surgery according to claim 1, characterized in that: The other end of the outer tube (1) has a contraction portion (12), and the contraction portion (12) is used to enable the elastic member (4) to quickly achieve a contracted state.

10. A sampling specimen bag for transurethral bladder surgery according to claim 1, characterized in that: One end of the moving rod (3) away from the elastic member (4) has a limiting portion (31), and the limiting portion (31) can contact the end of the outer tube (1).

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