WO2021179614A1

WO2021179614A1 - Surgery double-ball fixing apparatus

Info

Publication number: WO2021179614A1
Application number: PCT/CN2020/122705
Authority: WO
Inventors: 卢娜; 张文迪; 李广成; 刘健; 张文勇
Original assignee: 北京梅德厚普科技有限公司
Priority date: 2020-03-11
Filing date: 2020-10-22
Publication date: 2021-09-16
Also published as: CN111166491A

Abstract

A surgery double-ball fixing apparatus, relating to the technical field of surgical instruments. The surgery dual ball fixing apparatus comprises a first ball and socket joint assembly (11) and a second ball and socket joint assembly (12). The first ball and socket joint assembly (11) is connected to a supporting traverse rod (15), the supporting traverse rod (15) being a non-circular cross section; the supporting traverse rod (15) is inserted into the second ball and socket joint assembly (12), and a surgical instrument is adjusted by means of the rotation of the first ball and socket joint assembly (11) and the second ball and socket joint assembly (12). Both the first ball and socket joint assembly (11) and the second ball and socket joint assembly (12) comprise upper hemispherical shells (16), lower hemispherical shells (17), upper ball sockets (111), and lower ball sockets (110); the upper hemispherical shells (16) and the lower hemispherical shells (17) are provided between the upper ball sockets (111) and the lower ball sockets (110); intermediate elastomers (18) are provided between the upper hemispherical shells (16) and the lower hemispherical shells (17); and each of the intermediate elastomers (18) is provided with a locking hole (112). Dual adjustment is performed by means of the two ball and socket joint assemblies (11, 12), so that surgical instruments can be quickly in place and surgical preparation time can be saved.

Description

Surgical operation double ball fixing device

Technical field

The invention relates to the technical field of surgical instruments, in particular to a surgical operation double-ball fixing device.

Background technique

Surgical instrument fixation devices are commonly used surgical auxiliary devices in surgical operations. At present, the structure of surgical instrument fixation devices in surgery is relatively complicated, heavy, expensive, and inconvenient to operate. In view of these shortcomings, clinical applications are limited.

The Chinese patent with patent number CN109009485A discloses a surgical auxiliary fixation device, including a ball-and-socket joint assembly. The ball-and-socket joint assembly fits with the bone hole expansion fixation assembly by connecting the fixation assembly, and the ball-and-socket joint assembly realizes the flexibility of surgical instruments. Clamping, adjust the height, angle, and angle of the surgical instrument according to needs, lock and fix it after adjustment, so that the surgical instrument and the surgical site are relatively fixed, which is convenient for the implementation of the operation. The fixed structure affects the flexibility of adjustment.

Technical solutions

The purpose of the present invention is to address the above-mentioned shortcomings and propose a dual-adjustment method that can be adjusted by the first ball and socket joint assembly and the second ball and socket joint assembly. Surgery double ball fixation device with adjustable amplitude.

The present invention specifically adopts the following technical solutions:

A surgical operation double-ball fixing device includes a first ball-and-socket joint component and a second ball-and-socket joint component. The first ball-and-socket joint component is connected to a support crossbar, and the support crossbar is inserted into the second ball and socket joint component through the first ball and socket joint component. The rotation of the socket joint component and the second ball joint component adjusts the surgical instrument.

Preferably, the first ball and socket joint component and the second ball and socket joint component both include an upper hemispherical shell, a lower hemispherical shell, an upper spherical socket and a lower spherical socket, and the upper hemispherical shell and the lower hemispherical shell are placed on the upper and lower spherical sockets. In between, an intermediate elastic body is arranged between the upper hemispherical shell and the lower hemispherical shell, and the intermediate elastic body is provided with a locking hole.

Preferably, the support cross-bar has a non-circular cross-section, and the shape of the locking hole of the second ball and socket joint component is adapted to the cross-section of the support cross-bar.

Preferably, the upper hemispherical shell and the lower hemispherical shell of the first ball-and-socket joint assembly are provided with surgical instrument holes, and the locking hole and the surgical instrument hole are coaxially arranged.

Preferably, the upper ball socket and the lower ball socket of the first ball and socket joint assembly are provided with first fasteners for adjusting tightness, and by adjusting the first fasteners, the upper hemispherical shell and the lower hemispherical shell can squeeze the middle elastic body. , Thereby driving the deformation of the locking hole.

Preferably, the upper hemispherical shell and the lower hemispherical shell of the second ball-and-socket joint assembly are provided with transverse rod fixing holes, and the locking holes and the transverse rod fixing holes are arranged coaxially.

Preferably, it further includes a support, the second ball and socket joint assembly is fixed in the support, the support is provided with a second fastener for adjusting the tightness, and the upper hemisphere shell and the lower hemisphere are realized by adjusting the second fastener The shell squeezes the middle elastic body, thereby driving the locking hole to deform.

Preferably, a sunken support arm is connected between the support crossbar and the first ball and socket joint assembly, and the sunken support arm is connected with the upper ball socket of the first ball and socket joint assembly.

Preferably, it further includes a bone hole expansion and fixation assembly, and the bracket is installed on the bone hole expansion and fixation assembly; the bone hole expansion and fixation assembly includes a main body, a knob, a cam wrench and a movable expansion body; the front end of the main body is provided with a fixed support Open body with an axial hole inside and threaded at the end; the knob is installed on the end of the main body through the thread, and the knob is equipped with an ejector rod; the cam wrench includes a cam part and a wrench part, and the cam part is installed in the main body slot at the back of the axial hole Inside; the movable expansion body is provided with a semi-circular arm and is connected with a push rod. The push rod is installed in the front section of the axial hole. The push rod of the movable expansion body and the front section of the axial hole of the main body are mutually matched non- With a circular cross-section, both the movable expansion body and the fixed expansion body are provided with a spreading part, and the end section of the spreading part is provided with a tooth-shaped claw; the ejector rod, the cam part and the push rod are sequentially connected in the axial hole.

The above-mentioned wrench part includes a first bending section, a straight rod section, and a second bending section that are connected in sequence, and the two bending sections have opposite bending directions. Connected.

The outer periphery of the middle and rear section of the main body is covered with a shielding sleeve that can slide along the main body. The shielding sleeve is located on the front side of the knob; the shielding sleeve is provided with a sleeve axial groove that is opposite to the position of the groove of the main body. The second bending section penetrates into the axial groove of the sleeve, and the camshaft of the cam part is fixed or hinged on the wall of the shielding sleeve. When the shielding sleeve is sleeved on the main body, the camshaft can enter the limiting groove arranged in the rear section of the main body, so that the camshaft can move stably along the axial direction of the main body in the limiting groove.

The length of the above-mentioned sleeve axial groove is adapted to the second bending section. When the straight rod section of the wrench part abuts the middle and front section of the main body, at this time the second bending section is placed in the axial sleeve groove, and the cam wrench can automatically The lock is closed.

The cam disc of the cam part is rotatably connected with the cam shaft, and the front end of the ejector rod is hinged with the cam shaft; the front end of the ejector rod is provided with a notch, and the cam plate is located at the notch.

In the above, a limit part is provided between the rear end of the push rod and the front end of the main body to prevent the push rod from falling out.

The above-mentioned expansion parts are all step-shaped, including a horizontal surface and a vertical surface, the outer end of the horizontal surface is upwardly tilted, and the outer end of the vertical surface protrudes outward in an arc shape.

Beneficial effect

The present invention has the following beneficial effects:

The device realizes flexible clamping of surgical instruments through two ball-and-socket joint components. By adjusting the length and direction of the fixing rod in the second ball-and-socket joint component, the center of the first ball-and-socket joint component is positioned at a suitable surgical position. Tighten the second ball and socket joint assembly; insert a rod-shaped surgical instrument into the first ball and socket joint assembly and adjust the direction, lock the direction, insert the surgical instrument in this direction to a fixed depth, and further tighten the first ball and socket joint assembly when it is in place , Completely locked.

The surgical instruments are adjusted through the first ball and socket joint assembly and the second ball and socket joint assembly, and the height, angle, and angle of the surgical instrument are adjusted as needed. After the adjustment is in place, the surgical instrument is locked and fixed, so that the surgical instrument is relatively fixed to the surgical site, which is convenient The implementation of the operation; the sunken support arm is connected with the support bar, and the sunken support arm facilitates the first ball and socket joint component to fit the bone hole more, which is conducive to the greater adjustment angle of the surgical instrument in the bone hole;

The device has the advantages of small size, simple operation, reliable fixation, and low price, and is especially suitable for neurosurgery craniocerebral surgery, and can realize fixation with a single bone hole.

In addition, the above-mentioned bone hole expansion fixing assembly can be used to move the spanner part of the cam wrench after the tooth-shaped claw touches the bone hole wall, that is, when the knob is tightened to the maximum state, and the cam part (cam plate) is brought to stop from the bottom. The point is turned to the top dead center, and the push rod is moved for a certain distance, so that the movable expansion body is further expanded and embedded into the inner wall of the bone hole to achieve firm fixation. The bone hole expansion fixing component is integrated with the first ball and socket joint component and the second ball and socket joint component, which is more helpful for realizing single bone hole fixation, and is particularly suitable for neurosurgery craniocerebral surgery.

Description of the drawings

Fig. 1 is a schematic structural diagram of an embodiment of the surgical double ball fixation device of the present invention;

Fig. 2 is an exploded schematic diagram of Fig. 1.

Fig. 3 is a schematic structural principle diagram of another embodiment of the surgical double ball fixation device of the present invention;

Figure 4 is an exploded view of Figure 3, mainly showing the bone hole expansion and fixation assembly;

Figure 5 is a schematic diagram of the cam portion of the bone hole spreading and fixing assembly;

Figure 6 is a cross-sectional view of the bone hole opening and fixing assembly;

FIG. 7 is a schematic diagram of the structure principle of the second embodiment of the bone hole distracting and fixing assembly in the present invention; FIG.

Fig. 8 is a cross-sectional view of Fig. 7.

Among them, 11 is the first ball and socket joint assembly, 12 is the second ball and socket joint assembly, 3 is the bone hole expansion and fixation assembly, 14 is the sunken support arm, 15 is the support crossbar, 16 is the upper hemispherical shell, and 17 Is the lower hemispherical shell, 18 is the middle elastic body, 19 is the first fastener, 110 is the lower ball socket, 111 is the upper ball socket, 112 is the locking hole, 113 is the surgical instrument hole, 114 is the crossbar fixing hole, 115 is the support, 116 is the second fastener;

31 is the main body, 3101 is the limit slot, 3102 is the main body slot, 32 is the knob, 33 is the cam wrench, 3301 is the first bending section, 3302 is the straight section, 3303 is the second bending section, 34 is the optional Movable spreader, 35 is a fixed spreader, 36 is a spreader, 37 is a toothed claw, 38 is an axial hole, 39 is a thread, 310 is a mandrel, 31001 is a notch, 311 is a cam, 312 It is a push rod, 313 is a shielding sleeve, 31301 is an axial slot of the sleeve, 314 is a semicircular arm, 315 is a horizontal plane, and 316 is a vertical plane.

Embodiments of the present invention

The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

Example 1

As shown in Figures 1 and 2, a surgical double ball fixation device includes a first ball and socket joint assembly 11, a second ball and socket joint assembly 12 and a support 115; a first ball and socket joint assembly 11 and a second ball and socket joint assembly The joint component 12 is fixed on the bone hole distracting and fixing component 3 through the support 115. The first ball and socket joint assembly 11 is connected to the support crossbar 15, the support crossbar 15 is inserted into the second ball and socket joint assembly 12, and the surgical instrument is adjusted by the rotation of the first ball and socket joint assembly 11 and the second ball and socket joint assembly 12. Adjust the height, angle, and angle of the surgical instrument as needed, and lock and fix it after adjustment to make the surgical instrument relatively fixed to the surgical site.

Both the first ball and socket joint assembly 11 and the second ball and socket joint assembly 12 include a lower ball socket 110, an upper ball socket 111, an upper hemispherical shell 16 and a lower hemispherical shell 17, and the upper hemispherical shell 16 and the lower hemispherical shell 17 are placed on the upper ball Between the socket 110 and the lower ball socket 111, between the upper hemispherical shell 16 and the lower hemispherical shell 17, an intermediate elastic body 18 is provided. The intermediate elastic body 18 is provided with a locking hole 112. The upper hemispherical shell of the first ball and socket joint assembly 11 16 and the lower hemispherical shell 17 are provided with a surgical instrument hole 113, and the locking hole 112 and the surgical instrument hole 113 are arranged coaxially.

As a preferred manner, the support cross-bar 15 has a non-circular cross-section, and the shape of the locking hole of the second ball and socket joint assembly 12 is adapted to the cross-section of the support cross-bar.

One end of the lower ball socket 10 and the upper ball socket 11 of the first ball-and-socket joint assembly 11 is engaged, and the other end is provided with a first fastener 19 for adjusting the tightness and fixation. The first ball is realized by adjusting the first fastener 19 The upper hemispherical shell and the lower hemispherical shell of the socket joint assembly squeeze the middle elastic body 18 to drive the locking hole 112 to deform.

The upper hemispherical shell and the lower hemispherical shell of the second ball and socket joint assembly 12 are provided with cross-bar fixing holes 114, and the locking holes of the second ball-and-socket joint assembly 12 and the cross-bar fixing holes 114 are coaxially arranged.

The upper ball socket of the second ball and socket joint assembly 12 is firmly fixed at the support 115, and the lower ball socket at the same time serves as a pressure plate. The firmware 116 realizes that the upper hemispherical shell and the lower hemispherical shell squeeze the middle elastic body by adjusting the second fastener 116, thereby driving the locking hole to deform.

Adjust the length and direction of the fixing rod in the second ball and socket joint assembly 12 so that the center of the first ball and socket joint assembly 12 is at a suitable surgical position, and tighten the second ball and socket joint assembly 12 through the second fastener 116;

The non-circular hole of the second ball and socket joint assembly 12 can restrict the support bar of the first ball and socket joint assembly 11 from rotating around the axis;

Insert the rod-shaped surgical instrument into the first ball and socket joint assembly and adjust the direction, and tighten the first fastener 19 so that the ball shell cannot rotate and lock the direction; insert the surgical instrument in this direction to a fixed depth, and tighten it further after it is in place The first fastener 19 completely locks the first ball and socket joint assembly 11.

Example 2

3-6, in addition to the first ball-and-socket joint assembly 11, the second ball-and-socket joint assembly 12 and the support 115 in Embodiment 1, the surgical double-ball fixation device also includes a bone hole expansion fixation assembly, The bracket is installed on the bone hole expansion fixing assembly. The bone hole quick expansion fixing assembly includes a main body 31, a knob 32, a cam wrench 33 and a movable expansion body 34. The front end of the main body 31 is provided with a fixed expansion body 35, an axial hole is provided inside, and a thread is provided at the end. The knob 32 is screwed on the end of the main body, and the jack 310 is connected to the knob 32. The cam wrench 33 includes a cam portion and a wrench portion, and the cam portion 311 is installed in the main body slot 3102 at the rear section of the axial hole. The movable expansion body 34 is provided with a semi-circular arm 314. The semi-circular arm 314 can fully expose the bone hole and facilitate the operation of the instrument. The movable expansion body 34 is connected with a push rod 312, which is installed in the axial hole 38 The front section of the push rod 312 of the movable expansion body 34 and the front section of the axial hole of the main body are non-circular cross-sections that cooperate with each other, which can prevent the push rod from rotating. Both the movable spreading body 34 and the fixed spreading body 35 are provided with a spreading portion 36, and a toothed claw 37 is provided at the end of the spreading portion 36. The ejector rod 310, the cam portion 311, and the push rod 312 are sequentially connected in the axial hole, which means that the front end surface of the ejector rod 310 is in contact with the rear side of the cam portion 311, and the front side of the cam portion 311 is in contact with the end of the push rod 312. Keep the end faces in contact.

The above-mentioned wrench part includes a first bending section 301, a straight rod section 302, and a second bending section 303 which are connected in sequence. The bending directions of the two bending sections are opposite. The segment 303 is connected to the cam portion.

The outer periphery of the middle and rear section of the main body 1 is sleeved with a shielding sleeve 313 that can slide along the main body. The shielding sleeve 313 is located on the front side of the knob 32; The barrel axial groove 31301, the second bending section 3303 penetrates the sleeve axial groove 31301, and the cam shaft of the cam part is hinged on the shielding sleeve wall. When the shielding sleeve 313 is sleeved on the main body, the camshaft can enter the limiting groove 3101 provided in the rear section of the main body 31, so that the camshaft can move stably along the axial direction of the main body in the limiting groove.

The length of the above-mentioned sleeve axial groove 31301 is adapted to the second bending section 3303. When the straight rod section of the wrench part abuts the middle and front section of the main body, the cam part is located a little past the top dead point, and the movable expansion body is at the maximum In the open position, the second bending section 3302 is placed in the axial groove at this time, and the cam wrench can be self-locked and closed.

A limit part is provided between the rear end of the push rod and the front end of the main body to prevent the push rod from coming out, which can prevent the push rod from falling out of the axial hole.

The above-mentioned expansion parts 36 are all step-shaped, including a horizontal surface 315 and a vertical surface 316. The outer end of the horizontal surface 315 is upwardly tilted, and the outer end of the vertical surface 316 protrudes outward in an arc shape.

The bone hole supports the fixing component, and rotates the knob 32. During the screwing process of the knob, the knob carries the ejector rod to move forward, and the ejector rod 310 moves against the cam portion 11, and the shielding sleeve follows it, and then the cam portion 311 Move against the push rod and carry the movable expansion body to initially expand. When the knob is tightened to the maximum state, by pulling the wrench part, the wrench part drives the cam part to rotate. During this process, the camshaft rotates around the hinge point to make the cam The cam disc of the part 311 rotates from the bottom dead point to the top dead point, and moves a certain distance against the push rod to further expand the movable expansion body. The tooth-shaped claws of the expansion part can be inserted into the inner wall of the bone hole to achieve firm fixation.

6 and 7, as a deformation of the bone hole expansion and fixing assembly, the end of the ejector rod 310 is inserted into the knob 32, and the ejector rod 310, the cam portion 311, and the push rod 312 are sequentially connected in the axial hole. The front end of the finger push rod 310 is hinged with the cam shaft of the cam portion 31, and the front side of the cam portion 311 is kept in contact with the end face of the push rod 312. The bone hole supports the fixing assembly, and rotates the knob 32. During the process of screwing in the knob, the knob pushes the ejector rod to move forward, and the ejector rod 310 moves against the cam portion 11, and the shielding sleeve follows it, and then the cam portion 311 Move against the push rod and carry the movable expansion body to initially expand. When the knob is tightened to the maximum state, the spanner part is pulled, and the spanner part drives the cam part to rotate. During this process, the cam of the cam part 311 is coiled around the camshaft. The bottom dead point is turned to the top dead point, and the push rod is moved for a certain distance to further expand the movable expansion body, and the tooth-shaped claws of the expansion part can be inserted into the inner wall of the bone hole to achieve firm fixation.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply one of these entities or operations. There is any such actual relationship or order between.

Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the essential scope of the present invention shall also belong to the present invention. The scope of protection of the invention.

Claims

A surgical operation double ball fixing device, which is characterized in that it comprises a first ball and socket joint assembly and a second ball and socket joint assembly. The first ball and socket joint assembly is connected to a support crossbar, and the support crossbar is inserted into the second ball and socket joint assembly, The surgical instrument is adjusted through the rotation of the first ball and socket joint component and the second ball and socket joint component.
The surgical double ball fixation device according to claim 1, wherein the first ball and socket joint assembly and the second ball and socket joint assembly each include an upper hemispherical shell, a lower hemispherical shell, an upper ball socket and a lower ball socket , The upper hemispherical shell and the lower hemispherical shell are placed between the upper ball socket and the lower ball socket, an intermediate elastic body is arranged between the upper hemispherical shell and the lower hemispherical shell, and the intermediate elastic body is provided with a locking hole.
The surgical double-ball fixation device according to claim 1, wherein the supporting cross-bar has a non-circular cross-section, and the shape of the locking hole of the second ball-and-socket joint component is adapted to the cross-section of the supporting cross-bar.
The surgical double ball fixation device according to claim 2, wherein the upper hemispherical shell and the lower hemispherical shell of the first ball-and-socket joint assembly are provided with surgical instrument holes, and the locking hole and the surgical instrument hole are arranged coaxially .
A surgical double ball fixation device according to claim 4, wherein the upper ball socket and the lower ball socket of the first ball and socket joint assembly are provided with first fasteners for adjusting tightness. A fastener realizes that the upper hemispherical shell and the lower hemispherical shell squeeze the middle elastic body, thereby driving the locking hole to deform.
The surgical double ball fixing device according to claim 2, wherein the upper hemispherical shell and the lower hemispherical shell of the second ball-and-socket joint assembly are provided with a cross-bar fixing hole, and the locking hole and the cross-bar fixing hole are the same Axis settings.
A surgical double ball fixing device according to claim 2, further comprising a support, the second ball and socket joint assembly is fixed in the support, the support is provided with a second tightening for adjusting the tightness The firmware realizes that the upper hemispherical shell and the lower hemispherical shell squeeze the middle elastic body by adjusting the second fastener, thereby driving the locking hole to deform.
The surgical double ball fixation device according to claim 1, wherein a sunken support arm is connected between the support crossbar and the first ball and socket joint assembly, and the sunk support arm is connected to the first ball and socket joint assembly. The upper ball and socket of the socket joint assembly are connected.
A surgical double ball fixation device according to claim 7, further comprising a bone hole expansion and fixation assembly, and the bracket is installed on the bone hole expansion and fixation assembly; the bone hole expansion and fixation assembly includes a main body and a knob , Cam wrench and movable spreading body; the front end of the main body is provided with a fixed spreading body with an axial hole inside and a thread at the end; the knob is installed at the end of the main body through the thread, and the knob is equipped with an ejector rod; the cam wrench includes a cam part And the spanner part, the cam part is installed in the main body slot in the back section of the axial hole; the movable expansion body is connected with a push rod, and the push rod is installed in the front section of the axial hole. Both the movable expansion body and the fixed expansion body are A spreading part is provided, and the end section of the spreading part is provided with a tooth-shaped claw; the ejector rod, the cam part, and the push rod are sequentially connected in the axial hole.
The surgical double ball fixation device according to claim 9, wherein the wrench portion includes a first bending section, a straight rod section, and a second bending section that are connected in sequence, and the two bending sections are bent in a direction On the contrary, the first bending section is used as a handle, and the second bending section is connected with the cam; the middle and rear sections of the main body are sheathed with a shielding sleeve that can slide along the main body, and the shielding sleeve is located on the front side of the knob; The sleeve is provided with a sleeve axial groove that is opposite to the position of the main body slot, the second bending section penetrates into the sleeve axial groove, and the camshaft of the cam part is fixed or hinged on the wall of the shielding sleeve; The length of the axial groove is adapted to the second bending section. When the straight rod section of the wrench part is against the middle and front section of the main body, at this time the second bending section is placed in the sleeve axial groove, and the cam wrench can be self-locked and closed.