CN113855172B - Handle locking assembly of split type minimally invasive instrument - Google Patents

Abstract

The invention relates to a handle locking assembly of a split type minimally invasive instrument, comprising a first handle and a second handle, the first handle and the second handle are hinged by a circular shaft, the first handle An arc-shaped transmission part is fixed on the top, and a horizontal shaft is installed on the second handle. Gears are fixed at both ends of the horizontal shaft, and the gears are installed inside the transmission part. The middle position of the horizontal shaft A brake ring is arranged on the side, and the brake ring is movably installed inside the second handle. By pressing the lock button, the brake ring is in contact with the horizontal axis. After the lock button is released, the spring resets. At this time, the adjusting tooth rotates inside the adjusting sleeve and cannot be completely reset. It is in an elongated state. The brake ring is used to press the horizontal axis, so that the horizontal axis is in a fixed state, so that the gear will not rotate, and the control of the first handle can be achieved. and the purpose of fixing the angles of both the second handle.

Description

A handle locking component of a split minimally invasive instrument

technical field

The invention relates to the field of medical devices, in particular to a handle locking component of a split type minimally invasive device.

Background technique

Surgical instruments refer to medical instruments used in clinical operations. In addition to conventional surgical instruments, there are also some specialized instruments: orthopedics, urology, obstetrics, burns, plastic surgery, brain surgery, cardiothoracic surgery, general surgery, etc. surgery and more.

Surgical instruments include split instruments. Through assembly, a unified control handle is used to assemble operation heads of different sizes. After assembly and fixation, the handle is used to control the opening and closing of the operation head, and the lock component is used to control two groups of handles to limit and control Operating head opening angle.

The disadvantage of the existing handle lock assembly is that it cannot conveniently control the deployment angles of the main and auxiliary sets of handles, so that the expansion angles of the two sets of handles are fixed.

Contents of the invention

The present invention aims at the technical problems existing in the prior art, and provides a handle locking component of a split-type minimally invasive instrument.

The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a handle locking assembly of a split type minimally invasive instrument, including a first handle and a second handle, and a circle is passed between the first handle and the second handle. The shaft is hinged, an arc-shaped transmission part is fixed on the first handle, a horizontal shaft is installed on the second handle, gears are fixed on both ends of the horizontal shaft, and the gears are installed inside the transmission part , a brake ring is arranged on the side of the middle position of the horizontal axis, and the brake ring is movably installed inside the second handle.

Preferably, the above-mentioned handle locking assembly of a split-type minimally invasive instrument, wherein the middle part of the transmission part is hollowed out, and a plurality of sets of tooth grooves are provided at equal angles on one side of the inner wall of the transmission part, and the tooth grooves Mesh connection with the gear.

Preferably, in the above-mentioned handle locking assembly of a split-type minimally invasive instrument, two sets of bearings are fixed on the second handle, and the two ends of the horizontal shaft are installed and fixed inside the bearings, so that There is an integrated structure between the horizontal shaft and the gear.

Preferably, the above-mentioned handle locking assembly of a split minimally invasive instrument, wherein an adjustment sleeve is fixed inside the second handle, and a locking button is movably installed on the side of the second handle, and the locking One end of the button is fixed with an adjustment tooth, the adjustment tooth is installed inside the adjustment sleeve, and the end of the adjustment tooth away from the lock button is connected to a connecting sleeve, and the inside of the connecting sleeve is provided with a through hole. A connecting shaft is movably installed inside the connecting shaft sleeve, a brake ring is fixed at one end of the connecting shaft, and a spring is arranged between the connecting shaft sleeve and the brake ring.

Preferably, the above-mentioned handle locking assembly of a split minimally invasive instrument, wherein the second handle and the adjustment sleeve are integrated, and the adjustment sleeve and the adjustment teeth form a telescopic rotation structure, the rotation angle of each adjustment tooth is 90°.

Preferably, in the above-mentioned handle locking assembly of a split minimally invasive instrument, the cross-section of the connecting sleeve is a "middle" structure, and the connecting sleeve and the spring form a detachable structure.

Preferably, the above-mentioned handle locking assembly of a split minimally invasive instrument, wherein the outer dimension of the connecting shaft is the same as the inner dimension of the through hole, and the gap between the connecting shaft and the connecting sleeve is A sliding structure is formed, the connection shaft and the brake ring are integrated, and the inner dimension of the brake ring is the same as the outer dimension of the horizontal axis.

The beneficial effects of the present invention are: by pressing the lock button, the adjusting tooth provided at one end of the lock button moves inside the adjustment sleeve, at this time, the spring is compressed, and the brake ring and the connecting shaft are in contact. After the button is pressed, the spring resets. At this time, the adjusting tooth rotates inside the adjusting sleeve and cannot be completely reset. It is in an elongated state. By pushing the connecting sleeve, the brake ring fixed at one end of the connecting shaft presses the connecting shaft, thereby making the connecting shaft It is in a fixed state, so that the gear is limited to not rotate, and the purpose of controlling the fixed angles of the first handle and the second handle is achieved.

Description of drawings

Fig. 1 is the sectional structure schematic diagram of the present invention;

Fig. 2 is a schematic diagram of a partially enlarged structure at A in Fig. 1 of the present invention;

Fig. 3 is a structural schematic diagram of two groups of handle lock positions of the present invention;

Fig. 4 is a schematic diagram of the exploded structure of the bouncing assembly of the present invention.

In the accompanying drawings, the list of parts represented by each label is as follows:

1. First handle; 2. Transmission part; 3. Tooth groove; 4. Second handle; 5. Bearing; 6. Horizontal shaft; 7. Gear; 8. Adjusting sleeve; 9. Lock button; 10. Adjusting tooth ; 11, connecting shaft; 12, spring; 13, connecting bushing; 14, through hole; 15, brake ring.

Detailed ways

The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a handle locking assembly of a split type minimally invasive instrument includes a first handle 1 and a second handle 4, and the first handle 1 and the second handle 4 The first handle 1 is fixed with an arc-shaped transmission part 2, the second handle 4 is equipped with a horizontal shaft 6, and the two ends of the horizontal shaft 6 are fixed with gears 7, and the gear 7 is installed on the transmission part 2. Inside, a brake ring 15 is arranged on the side of the middle position of the horizontal axis 6, and the brake ring 15 is movably installed inside the second handle 4.

As shown in FIG. 2 , the middle part of the transmission part 2 is hollowed out, and a plurality of sets of tooth grooves 3 are arranged at an equal angle on one side of the inner wall of the transmission part 2 , and the tooth grooves 3 and the gear 7 are meshed and connected. By hollowing out the middle position of the transmission part 2, and then connecting and engaging the tooth groove 3 and the gear 7 through the opening of the inner wall of the transmission part 2, when the transmission part 2 rotates, the driving gear 7 rotates, which can be passed The control gear 7 is fixed, so that the position of the transmission member 2 is limited and will not move.

As shown in FIG. 2 , two sets of bearings 5 are fixed on the second handle 4 , the two ends of the horizontal shaft 6 are fixed inside the bearings 5 , and the horizontal shaft 6 and the gear 7 are in an integrated structure. By fixing the bearing 5 on the second handle 4, while using the bearing 5 to limit the position of the horizontal shaft 6, the rotation of the horizontal shaft 6 will not be affected, and the integral structure design of the horizontal shaft 6 and the gear 7, through the gear 7 can be rotated to drive the rotation of the horizontal shaft 6 , otherwise, the rotation of the gear 7 can be realized by limiting the rotation of the horizontal shaft 6 .

As shown in Figure 3 and Figure 4: the inside of the second handle 4 is fixed with an adjustment sleeve 8, and the side of the second handle 4 is movable with a lock button 9, and one end of the lock button 9 is fixed with an adjustment tooth 10, and the adjustment tooth 10 is installed Inside the adjusting sleeve 8, one end of the adjusting tooth 10 away from the locking button 9 is connected with a connecting shaft sleeve 13, and the inside of the connecting shaft sleeve 13 is provided with a through hole 14, and the inside of the connecting shaft sleeve 13 is movably installed with a connecting shaft 11, One end of the connecting shaft 11 is fixed with a brake ring 15 , and a spring 12 is arranged between the connecting sleeve 13 and the brake ring 15 . By fixing the adjustment sleeve 8 inside the second handle 4, the adjustment sleeve 8 is used to limit the adjustment tooth 10 provided at one end of the lock button 9, and the lock button 9 is assembled with the connecting sleeve 13, and connected through the through hole 14 Connect the bushing 13 and the connecting shaft 11. By pushing the lock button 9, the moving of the connecting shaft 11 can be realized, so that the brake ring 15 fixed at one end of the connecting shaft 11 can be moved, so that the brake ring 15 is aligned with the horizontal shaft 6. It is defined so that the horizontal axis 6 cannot rotate.

As shown in Fig. 3 and Fig. 4: the second handle 4 and the adjusting sleeve 8 are integrated, the adjusting sleeve 8 and the adjusting teeth 10 form a telescopic rotating structure, and the rotation angle of the adjusting teeth 10 is 90° each time. By pushing the locking button 9, the adjusting tooth 10 moves inside the adjusting sleeve 8 at this time, and after the locking button 9 is released, the spring 12 will push the connecting sleeve 13 to move in the opposite direction after the locking button 9 is released, thereby making the connection The adjustment tooth 10 connected to one end of the shaft sleeve 13 is coordinated by the adjustment sleeve 8 to rotate the adjustment tooth 10 by 90°, and the internal structure of the adjustment sleeve 8 is designed so that the adjustment tooth 10 will not return to the original position, so that the adjustment tooth 10 One end is defined at the other end of the adjusting sleeve 8, and is defined after the position of the connecting shaft 11 provided at one end of the adjusting tooth 10 is moved.

As shown in Figure 4: the cross section of the connecting bush 13 is a "middle" character structure, and the connecting bush 13 and the spring 12 form a detachable structure. The structural design of the connecting sleeve 13 enables one end of the connecting sleeve 13 to install the spring 12, and the spring 12 can be disassembled on the connecting sleeve 13, and when the spring 12 is compressed, one end of the spring 12 will not Move out from the other end of the connecting shaft sleeve 13, so that the spring 12 is easy to reset, and reversely push the brake ring 15 provided on the other side of the spring 12.

As shown in Figure 3 and Figure 4: the external dimensions of the connecting shaft 11 are the same as the internal dimensions of the through hole 14, a sliding structure is formed between the connecting shaft 11 and the connecting sleeve 13, and the connecting shaft 11 and the brake ring 15 are integrated Structure, the inner size of the brake ring 15 is the same as the outer size of the transverse shaft 6. Use the through hole 14 to install the connecting shaft 11 on the connecting shaft sleeve 13. When the connecting shaft sleeve 13 is pushed, when the brake ring 15 contacts the horizontal shaft 6, the connecting shaft 11 will move inside the connecting shaft sleeve 13 , and then the spring 12 is compressed. By bonding the brake ring 15 and the horizontal shaft 6, the horizontal shaft 6 is limited, and the angle of the horizontal shaft 6 is limited so that it cannot rotate, so that the gear 7 and the transmission member 2 are not controlled. There will be movement, and the purpose of controlling the fixed angles of the first handle 1 and the second handle 4 can be achieved at most.

Working principle: Connect the first handle 1 and the second handle 4 with a round shaft, press the first handle 1 to rotate the first handle 1, and connect the first handle 1 and the second handle 4 with the operating rod ( (not sourced in the figure) is unfolded, and the rotation of the first handle 1 will cause the transmission member 2 set on the first handle 1 to rotate synchronously, and the gear 7 will be driven to rotate through the tooth groove 3, and then the horizontal axis will be fixed between the two sets of gears 7 6 Rotate inside the bearing 5. When it is necessary to control the expansion angle of the first handle 1 and the second handle 4, by pressing the lock button 9, the adjustment tooth 10 provided at one end of the lock button 9 is inside the adjustment sleeve 8 Move, at this time the spring 12 is compressed, and the brake ring 15 is in contact with the horizontal shaft 6. After the lock button 9 is released, the spring 12 resets. At this time, the adjustment tooth 10 rotates 90° inside the adjustment sleeve 8 and cannot Complete reset, in the stretched state, push the connecting shaft sleeve 13 to make the brake ring 15 fixed at one end of the connecting shaft 11 press the horizontal shaft 6, and then make the horizontal shaft 6 in a fixed state, so that the gear 7 is limited to not rotate, reaching The purpose of controlling the fixed angles of both the first handle 1 and the second handle 4 .

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience The description of the present invention and simplified description do not indicate or imply that the device or element referred to must have a specific orientation, as well as a specific orientation configuration and operation, and therefore, should not be construed as limiting the present invention. In addition, "first" and "second" are for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Therefore, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

An embodiment of the present invention has been described in detail above, but the content described is only a preferred embodiment of the present invention, and cannot be considered as limiting the implementation scope of the present invention. All equivalent changes and improvements made according to the application scope of the present invention shall still belong to the scope covered by the patent of the present invention. .

Claims (6)

1. The utility model provides a handle portion capture subassembly of split type utmost point minimal access instrument, includes first handle (1) and second handle (4), its characterized in that: the first handle (1) and the second handle (4) are hinged through a circular shaft, an arc-shaped transmission piece (2) is fixed on the first handle (1), a transverse shaft (6) is arranged on the second handle (4), gears (7) are fixed at two ends of the transverse shaft (6), the gear (7) is arranged inside the transmission piece (2), a brake ring (15) is arranged on the side surface of the middle position of the transverse shaft (6), the brake ring (15) is movably arranged inside the second handle (4), an adjusting sleeve (8) is fixed inside the second handle (4), a locking button (9) is movably arranged on the side surface of the second handle (4), one end of the locking button (9) is fixed with an adjusting tooth (10), the adjusting teeth (10) are arranged in the adjusting sleeve (8), one end of the adjusting teeth (10) far away from the locking button (9) is connected with a connecting shaft sleeve (13), a through hole (14) is arranged inside the connecting shaft sleeve (13), a connecting shaft (11) is movably arranged in the connecting shaft sleeve (13), one end of the connecting shaft (11) is fixed with a brake ring (15), and a spring (12) is arranged between the connecting shaft sleeve (13) and the brake ring (15).

2. The handle capture assembly of a split minimally invasive instrument of claim 1, wherein: the middle part of the transmission part (2) is hollow, a plurality of groups of tooth grooves (3) are formed in one side of the inner wall of the transmission part (2) at equal angles, and the tooth grooves (3) are connected with the gears (7) in a meshed mode.

3. The handle capture assembly of the split minimally invasive instrument of claim 1, wherein: two groups of bearings (5) are fixed on the second handle (4), two ends of the transverse shaft (6) are fixedly arranged in the bearings (5), and the transverse shaft (6) and the gear (7) are of an integrated structure.

4. The handle capture assembly of a split minimally invasive instrument of claim 1, wherein: second handle (4) with formula structure as an organic whole between adjusting collar (8), adjusting collar (8) with adjust tooth (10) and constitute flexible revolution mechanic, the rotation angle of adjusting tooth (10) is 90.

5. The handle capture assembly of the split minimally invasive instrument of claim 1, wherein: the cross section of the connecting shaft sleeve (13) is of a 'middle' structure, and the connecting shaft sleeve (13) and the spring (12) form a detachable structure.

6. The handle capture assembly of a split minimally invasive instrument of claim 1, wherein: the outside size of connecting axle (11) with the inside size of through-hole (14) is the same, connecting axle (11) with constitute sliding construction between connecting axle sleeve (13), connecting axle (11) with formula structure as an organic whole between brake ring (15), the inboard size of brake ring (15) is the same with the outside size of cross axle (6).

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