CN215129271U - Small incision operation distraction device - Google Patents

Abstract

The utility model relates to the technical field of surgical instruments, and discloses a small incision surgery distraction device, which comprises a long bar with the cross section shaped like Contraband, wherein the upper side and the lower side in the long bar are both provided with racks, the upper side and the lower side in the long bar are both provided with dovetail chutes, the back of the racks is integrally provided with dovetail sliders embedded in the dovetail chutes, the end parts of the racks are both provided with connecting rods, one end of each connecting rod, which is far away from the racks, is welded with a distraction plate, a driving gear is arranged between the racks on the upper side and the lower side, the thickness of the driving gear is smaller than the width of the racks, the driving gear is provided with a driving shaft, the long bar is provided with a shaft hole for the driving shaft to pass through, the outer wall of the long bar is provided with an inner gear sleeve sleeved on the circumferential side of the driving shaft, the driving shaft is provided with a limit gear meshed with one end of the inner gear sleeve, which is far away from the long bar, the connecting ring is sleeved on the driving shaft, the circumferential side outer wall of the driving shaft is provided with a ring groove, the driving shaft is sleeved with a return spring, and one end of the driving shaft is provided with a knob.

Description

Small incision operation distraction device

Technical Field

The utility model relates to a surgical instruments technical field, in particular to little incision art struts device.

Background

At present, in a small incision operation, such as a small hand incision operation, due to the small incision, a proper instrument is not usually provided for propping open the incision position, and finally the incision is difficult to expose.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a little incision art struts device can carry out comparatively stable strutting to the incision of little incision art.

The above technical purpose of the present invention can be achieved by the following technical solutions: a small incision surgery opening device comprises a long bar with an Contraband-shaped cross section, racks are arranged on the upper side and the lower side of the long bar, dovetail chutes are formed in the upper side and the lower side of the long bar, dovetail sliders embedded in the dovetail chutes are integrally arranged on the back of the racks, connecting rods are arranged at the end portions of the racks, an opening plate for separating incisions is welded at one end, away from the racks, of each connecting rod, a driving gear meshed with the two racks is arranged between the racks on the upper side and the lower side, the thickness of the driving gear is smaller than the width of the racks, a driving shaft is arranged on the driving gear, a shaft hole for the driving shaft to pass through is formed in the long bar, an inner gear sleeve sleeved on the periphery of the driving shaft is arranged on the outer wall of the long bar, and a limiting gear meshed with the inner gear sleeve away from one end of the long bar is arranged on the driving shaft, position department cover in the drive shaft and being located the inner gear sleeve is equipped with the go-between, set up the annular that supplies the inboard embedding of go-between on the week side outer wall of drive shaft, the cover is equipped with one end and connects on the go-between and the reset spring of other end connection on rectangular pole outer wall in the drive shaft, the drive shaft is kept away from drive gear's one end and is located the outside of inner gear sleeve and be provided with the knob.

The utility model discloses a further set up to: the cross section of the opening plate is L-shaped.

To sum up, the utility model discloses following beneficial effect has:

1. when the two expanding plates are embedded into the notch and the distance between the two expanding plates needs to be adjusted so as to separate the notch, the knob is pulled outwards at first to separate the limit gear from the inner gear sleeve, and the return spring is elastically deformed at the moment, wherein the thickness of the driving gear is smaller than the width of the rack, so that the driving gear is pulled to the position on the inner side of the rack; then, the knob is rotated to drive the driving gear to rotate, the driving gear can drive the upper rack and the lower rack to slide, the racks can move along the dovetail sliding grooves by utilizing the dovetail sliding blocks, and then the racks can drive the opening plates to move, so that the distance between the two opening plates can be adjusted; meanwhile, after the adjustment is finished, the knob is loosened, the reset spring can be elastically restored, the limit gear can be driven to be embedded into the inner gear sleeve, the distance between the two opening plates can be limited through the meshing of the inner gear sleeve and the limit gear, and finally, the stable opening of the opening plates can be facilitated, and the stable opening of the small incision can be realized;

2. the cross section of the opening plate is L-shaped, the opening plate can stably open the incision, and the loosening is reduced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a structural sectional view of the present invention, in which the structure of the connecting rod and the opening plate is omitted.

Reference numerals: 1. a long bar; 11. a dovetail chute; 12. a shaft hole; 2. a rack; 21. a dovetail slide block; 22. a connecting rod; 221. a spreader plate; 3. a drive gear; 4. a drive shaft; 41. a limit gear; 42. a ring groove; 43. a return spring; 44. a knob; 5. an inner gear sleeve; 6. and (7) connecting rings.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The utility model provides a device is propped open to little incision art, refer to fig. 1, fig. 2, this kind of device is propped open to little incision art includes that the cross-section becomes rectangular pole 1 of "Contraband" font, wherein the upper and lower both sides in the rectangular pole 1 all are provided with rack 2, rack 2's extending direction is parallel with rectangular pole 1's extending direction, and dovetail groove 11 has all been seted up on the upper and lower both sides inner wall in the rectangular pole 1, dovetail groove 11's extending direction is parallel with rectangular pole 1's extending direction, rack 2's back an organic whole is provided with the forked tail slider 21 of embedding in dovetail groove 11 simultaneously, rack 2 can carry out the removal of making a round trip along dovetail groove 11 this moment.

Referring to fig. 1 and 2, the end of the rack 2 is welded with the connecting rod 22, and one end of the connecting rod 22 away from the rack 2 is welded with the expanding plates 221, and the two expanding plates 221 can be used for separating notches, wherein the cross sections of the expanding plates 221 are L-shaped; meanwhile, a driving gear 3 meshed with the two racks 2 is further arranged between the racks 2 on the upper side and the lower side, the thickness of the driving gear 3 is smaller than the width of the racks 2, a driving shaft 4 is welded on the driving gear 3, and a shaft hole 12 for the driving shaft 4 to penetrate through is formed in the long rod 1.

Referring to fig. 1 and 2, an inner gear sleeve 5 sleeved on the periphery of a driving shaft 4 is welded on the outer wall of a long rod 1, a limit gear 41 meshed with the inner gear sleeve 5 and far away from one end of the long rod 1 is welded on the driving shaft 4, a connecting ring 6 is sleeved on the driving shaft 4 and located in the inner gear sleeve 5, a ring groove 42 for embedding the inner side of the connecting ring 6 is formed in the outer wall of the periphery of the driving shaft 4, at the moment, the connecting ring 6 can rotate along the periphery of the driving shaft 4, but the connecting ring 6 cannot move along the axis of the driving shaft 4; meanwhile, a return spring 43 with one end welded to the connecting ring 6 and the other end welded to the outer wall of the long rod 1 is sleeved on the driving shaft 4, a knob 44 is welded to one end of the driving shaft 4 far away from the driving gear 3, and the knob 44 is located on the outer side of the inner gear sleeve 5.

The principle is as follows: when the two expanding plates 221 are embedded in the cut and the distance between the two expanding plates 221 needs to be adjusted so as to separate the cut, the knob 44 is pulled outwards firstly, so that the limit gear 41 is separated from the inner gear sleeve 5, and at the moment, the return spring 43 is elastically deformed, wherein the thickness of the driving gear 3 is smaller than the width of the rack 2, so that the driving gear 3 is pulled to the position on the inner side of the rack 2; then, the knob 44 is rotated to drive the driving gear 3 to rotate, the driving gear 3 can drive the upper and lower racks 2 to slide, wherein the racks 2 can move along the dovetail sliding grooves 11 by using the dovetail sliding blocks 21, and then the racks 2 can drive the opening plates 221 to move, so that the distance between the two opening plates 221 can be adjusted; simultaneously when the regulation back that finishes, loosen knob 44, reset spring 43 can take place elasticity and resume, can drive stop gear 41 and imbed in interior tooth cover 5 this moment, can carry out spacingly to the distance between two distraction plates 221 through the meshing of interior tooth cover 5 and stop gear 41, finally can be favorable to the stable incision that struts of distraction plate 221, realizes carrying out comparatively stable the strutting to the incision of little incision art.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims (2)

1. A small incision surgery distraction device which is characterized in that: the long rod (1) with the section shaped like 'Contraband' is included, racks (2) are arranged on the upper side and the lower side in the long rod (1), dovetail chutes (11) are formed in the upper side and the lower side in the long rod (1), dovetail sliding blocks (21) embedded in the dovetail chutes (11) are integrally arranged on the back of the racks (2), connecting rods (22) are arranged at the end portions of the racks (2), one end, far away from the racks (2), of each connecting rod (22) is welded with a supporting plate (221) used for separating notches, driving gears (3) meshed with the two racks (2) are arranged between the racks (2) on the upper side and the lower side, the thickness of each driving gear (3) is smaller than the width of the corresponding rack (2), a driving shaft (4) is arranged on each driving gear (3), and a shaft hole (12) for the driving shaft (4) to pass through is formed in the long rod (1), be provided with on the outer wall of rectangular pole (1) and establish interior tooth cover (5) of establishing in drive shaft (4) week side, be provided with limit gear (41) of keeping away from rectangular pole (1) one end including the meshing on drive shaft (4), position department cover that just is located interior tooth cover (5) on drive shaft (4) is equipped with go-between (6), set up annular (42) that supply go-between (6) inboard embedding on the week side outer wall of drive shaft (4), the cover is equipped with reset spring (43) that one end is connected on go-between (6) and the other end is connected on rectangular pole (1) outer wall on drive shaft (4), the outside that the one end of drive gear (3) was kept away from in drive shaft (4) and is located interior tooth cover (5) is provided with knob (44).

2. A small-incision surgical distraction device according to claim 1, wherein: the cross section of the opening plate (221) is L-shaped.

Images