Drag hook for hepatobiliary surgery

Abstract

The utility model discloses a retractor for hepatobiliary surgery, which relates to the technical field of surgical instruments, and comprises a telescopic part, a mounting seat arranged at the top of the telescopic part, one end of a movable rod arranged at the top of the mounting seat, a telescopic retractor arranged at the other end of the movable rod, and a rotating mechanism arranged between the top end of the telescopic part and the mounting seat; the rotating mechanism comprises a rotating sleeve arranged on the peripheral face of the top end of the telescopic piece, a positioning hole formed in the inner wall of the rotating sleeve and an extrusion rod arranged on the side portion of the positioning hole, and a positioning unit is arranged on the outer surface of the telescopic piece. The adjusting mechanism is arranged between the mounting seat and the bottom end of the movable rod; the adjusting mechanism comprises a rotating shaft installed at the bottom end of the movable rod, a limiting hole formed in the end of the rotating shaft and a limiting unit arranged on the side of the limiting hole. According to the drag hook for the hepatobiliary surgery, the rotating mechanism and the adjusting mechanism are arranged, so that the angles of the blocks can be adjusted conveniently, and a doctor can operate the drag hook conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of surgical instruments, in particular to a retractor for hepatobiliary surgery. Background Art

[0002] Surgical instruments refer to the medical devices used in clinical operations. In addition to conventional surgical instruments, there are also some specialized instruments: orthopedics, urology, obstetrics and gynecology, burns, plastic surgery, neurosurgery, cardiothoracic surgery, general surgery, etc. The liver and gallbladder are located in a densely populated area of ​​viscera in the human chest cavity. During hepatobiliary surgery, hepatobiliary retractors are needed to pull apart the organs around the lesion site to facilitate intraoperative operations and observations by doctors.

[0003] Publication (announcement) No.: CN216652362U discloses a surgical retractor for clinical use in hepatobiliary surgery, comprising a base plate, a support rod is arranged above the base plate, the inner surface of the support rod is movably connected with a control threaded rod, the outer surface of the control threaded rod is movably connected with a sliding sleeve, both ends of the outer surface of the control threaded rod are fixedly connected with a limiting block, the outer side of the limiting block is movably connected with a control disk, one side of the outer surface of the control disk is provided with a slot, and one end of the control threaded rod is fixedly connected with a stopper; the control ring and the control threaded rod are further controlled to rotate by rotating the control rod, and then the two sliding sleeves on the outer surface of the control threaded rod are controlled to slide relative to each other on the outer surface of the sliding rod under the rotation of the control threaded rod, and the control threaded rod is limited to reversely control the rotation of the control ring and the control rod under the interaction between the control rod and the slot, so as to facilitate the use of the surgical retractor for clinical use in hepatobiliary surgery.

[0004] Although the above scheme is convenient for the use of clinical surgical retractors for hepatobiliary surgery, the angles of the first block and the second block are fixed during actual use and cannot be adjusted according to the needs of the physician, which makes it inconvenient for the physician to perform the next step. For this reason, we propose a retractor for hepatobiliary surgery. Utility Model Content

[0005] The main purpose of the utility model is to provide a retractor for hepatobiliary surgery, which solves the problem that the angles of the first block and the second block are fixed during actual use and cannot be adjusted according to the needs of the doctor, thereby making it inconvenient for the doctor to perform the next step of the operation.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A retractor for hepatobiliary surgery, comprising a telescopic member, a mounting seat arranged on the top of the telescopic member, one end of a movable rod arranged on the top of the mounting seat, and a telescopic retractor arranged at the other end of the movable rod, and further comprising:

[0008] A rotating mechanism, the rotating mechanism is arranged between the top end of the telescopic member and the mounting seat;

[0009] The rotating mechanism comprises a rotating sleeve arranged on the outer peripheral surface of the top end of the telescopic member, a positioning hole arranged on the inner wall of the rotating sleeve, and an extrusion rod arranged on the side of the positioning hole. The outer surface of the telescopic member is provided with a positioning unit;

[0010] An adjusting mechanism, wherein the adjusting mechanism is arranged between the mounting seat and the bottom end of the movable rod;

[0011] The adjustment mechanism comprises a rotating shaft installed at the bottom end of the movable rod, a limiting hole arranged at the end of the rotating shaft, and a limiting unit arranged at the side of the limiting hole.

[0012] Preferably, the telescopic member comprises a round rod and one end of an extension rod movably arranged inside the round rod, the other end of the extension rod is movably connected to the inner wall of the rotating sleeve, and a locking member is threadedly connected to the side wall of the round rod.

[0013] Preferably, a fixing mechanism is also provided at the bottom end of the telescopic member;

[0014] The fixing mechanism includes a U-shaped seat installed at the bottom end of the telescopic member, a threaded rod threadedly connected to the side wall of the U-shaped seat, and a clamping plate movably arranged at one end of the threaded rod. A slider is installed on the top of the clamping plate, and the slider is movably arranged on the top wall of the U-shaped seat.

[0015] Preferably, there are a plurality of positioning holes, which are arranged in a circular array on the inner wall of the rotating sleeve, and the number of the extrusion rods is the same as the number of the positioning holes, and their positions correspond to each other.

[0016] Preferably, there are two groups of positioning units, and the two groups of positioning units are arranged on the outer surface of the telescopic member opposite to each other;

[0017] The positioning unit includes a receiving groove arranged on the outer surface of the extension rod, one end of an elastic member installed on the side wall of the receiving groove, and one end of a positioning block fixedly connected to the other end of the elastic member, and the size of the other end of the positioning block is adapted to the size of the positioning hole.

[0018] Preferably, there are two groups of the limiting units, and the two groups of the limiting units are arranged oppositely on the outer surface of the mounting seat;

[0019] The limiting unit comprises a fixing shell fixedly arranged on the outer surface of the mounting seat, a limiting rod threadedly connected to the side wall of the fixing shell, and the size of one end of the limiting rod is adapted to the size of the limiting hole.

[0020] Preferably, the telescopic hook includes a mounting shell arranged at the top of the movable rod, a bidirectional screw rod movably arranged inside the mounting shell, a sliding sleeve relatively arranged on the outer circumference of the bidirectional screw rod, and a block installed on the outer surface of the sliding sleeve, and the outer surface of the sliding sleeve is movably connected to the inner wall of the mounting shell.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The U-shaped seat is inserted in the desired fixed position through the provided rotating mechanism and adjusting mechanism, the threaded rod is rotated to push the clamping plate against the fixed object, thereby fixing the position of the U-shaped seat, and then the extension rod is pulled to adjust its length, and the locking piece is rotated to make its end abut against the surface of the extension rod, thereby limiting the height of the telescopic piece, and the extrusion rod is pressed to push the positioning block to retract into the storage groove, and then the rotating sleeve is rotated to adjust the position of the movable rod and the telescopic hook. After the adjustment is completed, the extrusion rod is released and the elastic member is elastic. Under the extrusion action, one end of the positioning block is pushed to engage with the positioning hole, thereby limiting and fixing the rotating sleeve, and then cooperating with the rotating movable rod to further adjust the position of the telescopic hook so that it is directly opposite to the incision on the patient's body, and rotating the limiting rod so that one end of it is engaged with the limiting hole, thereby fixing the rotating shaft, thereby fixing the rotation angle of the movable rod, and then cooperating with the rotation of the bidirectional screw rod, under the action of the threaded pair, the two sliding sleeves drive the blocks to slide relative to each other along the length direction of the bidirectional screw rod, thereby stretching the incision on the patient's body, making it easy to adjust the angle of the blocks and convenient for the doctor to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0024] Figure 2 It is a top view of the utility model;

[0025] Figure 3 For this utility model Figure 2 Schematic diagram of the cross-section structure at AA in the middle;

[0026] Figure 4 For this utility model Figure 3 The enlarged structural diagram at B in the middle;

[0027] Figure 5 For this utility model Figure 2 Schematic diagram of the cross-section structure at CC;

[0028] Figure 6 For this utility model Figure 5 The enlarged structural diagram at D in the middle;

[0029] Figure 7 For this utility model Figure 3 Schematic diagram of the cross-sectional structure at EE.

[0030] In the figure:

[0031] Telescopic member; 11. round rod; 12. extension rod; 13. locking member;

[0032] Mounting seat;

[0033] Activity rod;

[0034] Telescopic hook; 41, mounting shell; 42, bidirectional screw rod; 43, sliding sleeve; 44, block;

[0035] Rotating mechanism; 51, rotating sleeve; 52, positioning hole; 53, extrusion rod; 54, positioning unit; 541, storage slot; 542, elastic member; 543, positioning block;

[0036] Adjusting mechanism; 61, rotating shaft; 62, limiting hole; 63, limiting unit; 631, fixing shell; 632, limiting rod;

[0037] Fixing mechanism; 71, U-shaped seat; 72, threaded rod; 73, clamping plate; 74, slider. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0039] Embodiment 1: Figure 1-7 As shown, a retractor for hepatobiliary surgery includes a telescopic member 1, a mounting seat 2 arranged on the top of the telescopic member 1, one end of a movable rod 3 arranged on the top of the mounting seat 2, and a telescopic retractor 4 arranged at the other end of the movable rod 3, and also includes:

[0040] A rotating mechanism 5, which is disposed between the top of the telescopic member 1 and the mounting seat 2;

[0041] The rotating mechanism 5 includes a rotating sleeve 51 disposed on the outer peripheral surface of the top end of the telescopic member 1, a positioning hole 52 disposed on the inner wall of the rotating sleeve 51, and an extrusion rod 53 disposed on the side of the positioning hole 52. A positioning unit 54 is disposed on the outer surface of the telescopic member 1.

[0042] An adjusting mechanism 6, the adjusting mechanism 6 is arranged between the mounting seat 2 and the bottom end of the movable rod 3;

[0043] The adjusting mechanism 6 includes a rotating shaft 61 installed at the bottom end of the movable rod 3 , a limiting hole 62 provided at the end of the rotating shaft 61 , and a limiting unit 63 provided at the side of the limiting hole 62 .

[0044] The telescopic member 1 includes a round rod 11 and one end of an extension rod 12 movably arranged inside the round rod 11. The other end of the extension rod 12 is movably connected to the inner wall of the rotating sleeve 51, and a locking member 13 is threadedly connected to the side wall of the round rod 11. The locking member 13 is rotated to make its end abut against the outer surface of the extension rod 12, thereby limiting the length of the extension rod 12 extending out of the round rod 11.

[0045] A fixing mechanism 7 is also provided at the bottom end of the telescopic member 1;

[0046] The fixing mechanism 7 includes a U-shaped seat 71 installed at the bottom end of the telescopic member 1, a threaded rod 72 threadedly connected to the side wall of the U-shaped seat 71, and a clamping plate 73 movably arranged at one end of the threaded rod 72. A slider 74 is installed on the top of the clamping plate 73, and the slider 74 is movably arranged on the top wall of the U-shaped seat 71. Preferably, a rubber pad is arranged on the side of the clamping plate 73 away from the threaded rod 72 to protect the surface of the clamping plate 73 from damage.

[0047] There are multiple positioning holes 52, which are arranged in a circular array on the inner wall of the rotating sleeve 51. The number of extrusion rods 53 is the same as the number of positioning holes 52, and their positions correspond. A sliding hole is opened on the inner wall of the rotating sleeve 51, and the extrusion rods 53 are slidably connected to the inner side of the sliding hole.

[0048] There are two groups of positioning units 54, and the two groups of positioning units 54 are arranged on the outer surface of the telescopic member 1 opposite to each other;

[0049] The positioning unit 54 includes a receiving groove 541 arranged on the outer surface of the extension rod 12, one end of an elastic member 542 installed on the side wall of the receiving groove 541, and one end of a positioning block 543 fixedly connected to the other end of the elastic member 542. The size of the other end of the positioning block 543 is adapted to the size of the positioning hole 52. Preferably, the elastic member 542 is an extrusion spring.

[0050] There are two groups of limit units 63, which are relatively arranged on the outer surface of the mounting seat 2. By arranging the two groups of limit units 63, the movable rod 3 is stably fixed;

[0051] The limiting unit 63 includes a fixing shell 631 fixedly disposed on the outer surface of the mounting seat 2 , a limiting rod 632 threadedly connected to the side wall of the fixing shell 631 , and the size of one end of the limiting rod 632 is adapted to the size of the limiting hole 62 .

[0052] The telescopic hook 4 includes a mounting shell 41 arranged at the top of the movable rod 3, a bidirectional screw rod 42 movably arranged inside the mounting shell 41, a sleeve 43 relatively arranged on the outer circumference of the bidirectional screw rod 42, and a block 44 installed on the outer surface of the sleeve 43. The outer surface of the sleeve 43 is movably connected to the inner wall of the mounting shell 41. Preferably, the two sleeves 43 are threadedly connected to the outer circumference of the bidirectional screw rod 42.

[0053] When in use, first place the device as a whole in an appropriate position, then insert the U-shaped seat 71 in the position to be fixed, and push the clamping plate 73 against the fixed object by rotating the threaded rod 72, so as to fix the position of the U-shaped seat 71, and then adjust its length by pulling the extension rod 12, and rotate the locking piece 13 so that its end is against the surface of the extension rod 12, so as to limit the height of the telescopic member 1, and press the extrusion rod 53 to push the positioning block 543 to retract into the storage groove 541, and then rotate the rotating sleeve 51 to adjust the position of the movable rod 3 and the telescopic hook 4. After the adjustment is completed, release the extrusion rod 53. Under the elastic extrusion action of the elastic member 542, one end of the positioning block 543 is pushed to engage with the positioning hole 52, thereby limiting and fixing the rotating sleeve 51, and then further adjusting the position of the telescopic hook 4 by rotating the movable rod 3 so that it is directly opposite to the incision on the patient's body, and then rotating the limiting rod 632 so that one end of it is engaged with the limiting hole 62, thereby fixing the rotating shaft 61, thereby fixing the rotation angle of the movable rod 3, and then rotating the bidirectional screw rod 42, under the action of the threaded pair, the two sliding sleeves 43 drive the blocks 44 to slide relative to each other along the length direction of the bidirectional screw rod 42, thereby opening the incision on the patient's body, making it convenient for the doctor to operate.

Claims

1. A retractor for hepatobiliary surgery, characterized in that: The invention comprises a telescopic member (1), a mounting seat (2) arranged at the top of the telescopic member (1), one end of a movable rod (3) arranged at the top of the mounting seat (2), and a telescopic hook (4) arranged at the other end of the movable rod (3), and further comprises: A rotating mechanism (5), wherein the rotating mechanism (5) is arranged between the top end of the telescopic member (1) and the mounting seat (2); The rotating mechanism (5) comprises a rotating sleeve (51) arranged on the outer peripheral surface of the top end of the telescopic member (1), a positioning hole (52) arranged on the inner wall of the rotating sleeve (51), and an extrusion rod (53) arranged on the side of the positioning hole (52); and a positioning unit (54) is arranged on the outer surface of the telescopic member (1); An adjusting mechanism (6), wherein the adjusting mechanism (6) is arranged between the mounting seat (2) and the bottom end of the movable rod (3); The adjustment mechanism (6) comprises a rotating shaft (61) mounted on the bottom end of the movable rod (3), a limiting hole (62) arranged at the end of the rotating shaft (61), and a limiting unit (63) arranged on the side of the limiting hole (62).

2. A retractor for hepatobiliary surgery according to claim 1, characterized in that: The telescopic member (1) comprises a round rod (11) and one end of an extension rod (12) movably arranged inside the round rod (11); the other end of the extension rod (12) is movably connected to the inner wall of the rotating sleeve (51); and a locking member (13) is threadedly connected to the side wall of the round rod (11).

3. A retractor for hepatobiliary surgery according to claim 2, characterized in that: The bottom end of the telescopic member (1) is also provided with a fixing mechanism (7); The fixing mechanism (7) comprises a U-shaped seat (71) mounted at the bottom end of the telescopic member (1), a threaded rod (72) threadedly connected to the side wall of the U-shaped seat (71), and a clamping plate (73) movably arranged at one end of the threaded rod (72), a sliding block (74) being mounted on the top of the clamping plate (73), and the sliding block (74) being movably arranged on the top wall of the U-shaped seat (71).

4. A retractor for hepatobiliary surgery according to claim 3, characterized in that: There are a plurality of positioning holes (52), and the plurality of positioning holes (52) are arranged in a circular array on the inner wall of the rotating sleeve (51). The number of the extrusion rods (53) is the same as the number of the positioning holes (52), and the positions thereof correspond.

5. A retractor for hepatobiliary surgery according to claim 4, characterized in that: There are two groups of the positioning units (54), and the two groups of the positioning units (54) are arranged on the outer surface of the telescopic member (1) relative to each other; The positioning unit (54) comprises a receiving groove (541) arranged on the outer surface of the extension rod (12), one end of an elastic member (542) mounted on the side wall of the receiving groove (541), and one end of a positioning block (543) fixedly connected to the other end of the elastic member (542), wherein the size of the other end of the positioning block (543) matches the size of the positioning hole (52).

6. A retractor for hepatobiliary surgery according to claim 1, characterized in that: There are two groups of the limiting units (63), and the two groups of the limiting units (63) are arranged on the outer surface of the mounting seat (2) relative to each other; The limiting unit (63) comprises a fixing shell (631) fixedly arranged on the outer surface of the mounting seat (2), a limiting rod (632) threadedly connected to the side wall of the fixing shell (631), and the size of one end of the limiting rod (632) is adapted to the size of the limiting hole (62).

7. A retractor for hepatobiliary surgery according to claim 6, characterized in that: The telescopic hook (4) comprises a mounting shell (41) arranged at the top end of the movable rod (3), a bidirectional screw rod (42) movably arranged inside the mounting shell (41), a sliding sleeve (43) arranged relative to the outer peripheral surface of the bidirectional screw rod (42), and a block (44) mounted on the outer surface of the sliding sleeve (43); the outer surface of the sliding sleeve (43) is movably connected to the inner wall of the mounting shell (41).

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