CN215384238U - Minimally invasive surgical instrument device - Google Patents

Abstract

A traction piece of the minimally invasive surgical instrument device is movably arranged in a body, the traction piece comprises a through hole, a guide hole and an external thread, the through hole penetrates through the traction piece along the axial direction of the traction piece, the guide hole penetrates through the traction piece along the axial direction of the traction piece and is located on one side of the traction piece, and the external thread is provided with a multi-thread and is arranged on the outer peripheral surface of the traction piece in a surrounding mode along the axial direction of the traction piece. A guide rod is fixed in the body and extends through the guide hole. One end of the first pipe fitting is connected with the traction piece and communicated with the through hole, and the other end of the first pipe fitting extends out of the body. The first knob is rotatably arranged on the body and comprises an internal thread connected with the external thread, and the first knob is configured to rotate through the internal thread and the external thread to drive the traction piece to reciprocate along the guide rod. The operation component is connected with one end of the first pipe fitting far away from the traction piece. Therefore, the first pipe fitting can stably reciprocate, and the operation stability of the operation assembly of the minimally invasive surgery instrument device can be improved when the minimally invasive surgery instrument device is operated.

Description

Minimally invasive surgical instrument device

Technical Field

The present invention relates to a minimally invasive surgical instrument device, and more particularly, to a minimally invasive surgical instrument device having an elongated tube.

Background

The existing minimally invasive surgical instrument device is provided with a body part held by an operator and a thin and long pipe fitting extending from the body part, wherein the head end of the pipe fitting is provided with a special surgical instrument, the surgical instrument can enter an affected part through the pipe fitting, and the operator can operate the handheld body part to ensure that the surgical instrument at the head end of the pipe fitting operates correspondingly. Generally, a mechanism for controlling the reciprocating movement of the pipe member back and forth is provided in the body portion, and it is difficult to maintain the stability of the long and thin pipe member during the reciprocating movement.

SUMMERY OF THE UTILITY MODEL

Based on the above problems, the present invention provides a minimally invasive surgical instrument device to improve the stability during operation.

An embodiment of the utility model provides a minimally invasive surgical instrument device, which comprises a body, a traction piece, a guide rod, a first pipe fitting, a first knob and a surgical assembly. The traction piece is movably arranged in the body and comprises a through hole, a guide hole and an external thread, the through hole penetrates through the traction piece along the axial direction of the traction piece and is located in the center of the traction piece, the guide hole penetrates through the traction piece along the axial direction of the traction piece and is located on one side of the traction piece, and the external thread is provided with a multi-thread and is arranged on the outer peripheral surface of the traction piece in a surrounding mode along the axial direction of the traction piece. A guide rod is fixed in the body and extends through the guide hole. One end of the first pipe fitting is connected with the traction piece and communicated with the through hole, and the other end of the first pipe fitting extends out of the body. The first knob is rotatably arranged on the body and comprises an internal thread connected with the external thread, and the first knob is configured to rotate through the internal thread and the external thread to drive the traction piece to reciprocate along the guide rod. The operation component is connected with one end of the first pipe fitting far away from the traction piece.

In one embodiment, the external threads have a four-start thread.

In one embodiment, the two guide rods are spaced from each other, the two guide holes are located at two sides of the through hole, and the two guide rods respectively penetrate through the two guide holes.

In one embodiment, the minimally invasive surgical instrument device further comprises an outer tube, one end of the outer tube is connected with the body, the other end of the outer tube is connected with the surgical assembly, the first tube extends through the outer tube, and the first tube is configured to be driven by the traction piece to reciprocate in the outer tube.

In one embodiment, the surgical assembly includes a base, a head, and a pivot rod, one end of the base is connected to the outer tube, and the other end is pivoted to the head, and one end of the first tube, which is far away from the traction member, is movably inserted into the base and is pivoted to the head through the pivot rod.

In one embodiment, the base includes a sliding groove, the sliding groove includes a first stopping portion and a second stopping portion, the first stopping portion is relatively adjacent to the outer tube, the second stopping portion is relatively adjacent to the head, the first tube includes a sliding member, one end of the sliding member is connected to one end of the first tube away from the traction member, and the other end of the sliding member is pivotally connected to the head through a pivot rod, and the sliding member is configured to reciprocate between the first stopping portion and the second stopping portion along the sliding groove.

In one embodiment, the sliding member is configured such that when abutting against the first stopping portion, an angle between an extending direction of the head portion and an extending direction of the base portion is 60 degrees, and when abutting against the second stopping portion, an angle between an extending direction of the head portion and an extending direction of the base portion is 0 degree.

In an embodiment, the sliding member includes a sleeve portion and a half ring portion, a rear end of the half ring portion is connected to an outer peripheral surface of a front end of the sleeve portion, a rear end of the sleeve portion is connected to one end, away from the traction member, of the first pipe, the front end of the half ring portion is pivoted to the joint portion, the rear end of the half ring portion corresponds to the first stopper portion, and the front end of the sleeve portion corresponds to the second stopper portion.

In an embodiment, the minimally invasive surgical instrument device further includes a second knob and a second tube, the second knob is rotatably disposed on the body, the second tube is embedded in a rotation center of the second knob and extends outside the body, and the surgical assembly is connected to an end of the second tube away from the body.

In one embodiment, the second tube extends through the first tube, and the second tube is configured to rotate the surgical assembly as the second knob is rotated.

In one embodiment, the minimally invasive surgical instrument device further comprises a trigger member connected with the body, wherein the second tube comprises a joint connected with one end of the second tube in the body, the trigger member comprises an engagement groove in which the joint is movably engaged, and the trigger member is configured to drive the second tube to reciprocate in the first tube through the engagement groove and the joint.

In an embodiment, the minimally invasive surgical instrument device further includes an input/output portion and a conductive sheet, the input/output portion is disposed on the body, the conductive sheet is disposed in the body, one end of the conductive sheet is connected to the input/output portion, and the other end of the conductive sheet abuts against the second tube.

In one embodiment, the first knob includes a metal portion and a plastic portion, the metal portion is annular, the plastic portion surrounds an outer annular surface of the metal portion, and the internal threads are disposed on an inner annular surface of the metal portion.

In summary, according to the minimally invasive surgical instrument device of one or more embodiments of the present invention, the external thread of the traction member having the multi-start thread is rotatably engaged with the internal thread of the first knob, and the guiding hole of the traction member is guided to engage with the guiding tube, so that the first tube can reciprocate smoothly, and the operation stability of the surgical assembly of the minimally invasive surgical instrument device can be improved when the minimally invasive surgical instrument device is operated.

The detailed features and advantages of the present invention are described in detail in the following embodiments, which are sufficient for anyone skilled in the art to understand the technical contents of the present invention and to implement the present invention, and the related objects and advantages of the present invention can be easily understood by anyone skilled in the art according to the disclosure of the present specification, the scope of the claims and the accompanying drawings.

Drawings

The foregoing summary, as well as the following detailed description of the utility model, will be better understood when read in conjunction with the appended drawings. In the drawings:

FIG. 1 is a schematic view of a minimally invasive surgical instrument assembly according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of a minimally invasive surgical instrument device in an embodiment of the present invention;

FIG. 3 is an exploded view of the first knob and pulling member in one embodiment of the present invention;

FIG. 4 is an enlarged view of a portion of the first tube and surgical assembly in an embodiment of the present invention;

FIG. 5 is a schematic view of a slider in one embodiment of the present invention;

FIG. 6 is a first schematic view illustrating operation of a first instrument of the present invention; and

FIG. 7 is a second schematic view illustrating the operation of the minimally invasive surgical instrument device according to an embodiment of the utility model.

Description of the reference numerals

100 main body

110 pulling element

111 through hole

112 pilot hole

113 external screw thread

113a, 113b, 113c, 113d thread

120 guide rod

130 first pipe fitting

131 sliding member

1311 casing part

1312 half ring part

140 first knob

141 internal thread

142 metal part

143 plastic part

150 surgical assembly

151 base

1511 chute

1512 first stop part

1513 second stop

152 head portion

153 pivoting lever

154 surgical clamp

160 outer tube

170 second knob

180 second pipe fitting

181 joint

190 trigger piece

191 engaging groove

200 input/output unit

210 conducting strips.

Detailed Description

Referring to fig. 1 and 2, fig. 1 is a schematic view of a minimally invasive surgical instrument device according to an embodiment of the utility model, and fig. 2 is a partially enlarged view of the minimally invasive surgical instrument device according to an embodiment of the utility model. In the embodiment, the minimally invasive surgical instrument device includes a body 100, a pulling member 110, a guide rod 120, a first tube 130, a first knob 140, and a surgical assembly 150. It should be understood that the body 100 is omitted from a portion of the housing for the convenience of showing the internal elements and structures of the body 100. In practical applications, the body 100 is covered by a casing, such that the pulling element 110 and the guiding rod 120 are completely covered in the casing of the body 100, and the outer periphery of the first knob 140 is exposed from the casing of the body 100 for an operator to operate the first knob 140. The first tube 130 extends outwardly from the body 100.

Referring to fig. 3, fig. 3 is an exploded view of the first knob 140 and the pulling member 110 according to an embodiment of the utility model. As shown in fig. 1 to 3, the towing member 110 is detachably provided in the body 100. In some embodiments, as shown in fig. 3, the pulling member 110 includes a through hole 111, a guiding hole 112, and an external thread 113, the through hole 111 is located at the center of the pulling member 110 and penetrates the pulling member 110 in the axial direction of the pulling member 110, and the guiding hole 112 penetrates the pulling member 110 in the axial direction of the pulling member 110. The external thread 113 has a multiple thread and is circumferentially provided on the outer circumferential surface of the pulling member 110 in the axial direction of the pulling member 110. In fig. 3, the external thread 113 has four threads 113a, 113b, 113c, 113d, and the four threads 113a, 113b, 113c, 113d sequentially extend around the traction element 110 in the axial direction.

As shown in fig. 3, in some embodiments, the first knob 140 includes a metal part 142 and a plastic part 143, the metal part 142 is annular, the plastic part 143 surrounds an outer annular surface of the metal part 142, and the internal thread 141 is disposed on an inner annular surface of the metal part 142. In some embodiments, the metal portion 142 and the pulling element 110 are made of metal, thereby preventing abrasion and enhancing smoothness and stability of operation. In some embodiments, the first knob 140 may be formed by two-material in-mold molding to form the metal portion 142 and the plastic portion 143.

Referring to fig. 6, fig. 6 is a schematic view illustrating the operation of a minimally invasive surgical instrument device according to an embodiment of the utility model. The guide rod 120 is fixed in the body 100 and extends through the guide hole 112, the guide rod 120 extends along the axial direction of the traction piece 110, and the traction piece 110 can reciprocate on the guide rod 120 through the guide hole 112. In some embodiments, as shown in fig. 3 and 6, there are two guiding rods 120 spaced apart from each other, there are two guiding holes 112 spaced apart from each other, the two guiding holes 112 are located at two sides of the through hole 111, and the two guiding rods 120 respectively pass through the two guiding holes 112. By the cooperation of the two guide rods 120 with the guide holes 112, the drawing member 110 can be linearly moved reciprocally on the guide rods 120 more stably.

In this embodiment, one end of the first pipe 130 is connected to the pulling member 110 and communicates with the through hole 111, and the other end extends out of the body 100. Surgical assembly 150 is connected to an end of first tube 130 distal to retractor 110. In some embodiments, one end of the first pipe member 130 enters the through hole 111 and is embedded in the through hole 111. The first knob 140 is rotatably provided on the body 100. The first knob 140 can rotate around the axial direction of the traction member 110 as a rotation center, but the position of the first knob 140 on the body 100 is fixed and does not reciprocate. As shown in fig. 3, the first knob 140 includes an internal thread 141, the internal thread 141 is connected to the external thread 113, and the first knob 140 is configured to rotate to drive the pulling member 110 to reciprocate in the axial direction through the internal thread 141 and the external thread 113. When the operator rotates the first knob 140, the internal threads 141 of the first knob 140 interact with the external threads 113, and the internal threads 141 of the first knob 140 drive the external threads 113 to reciprocate the pulling member 110 in the axial direction thereof. For example, when the operator rotates the first knob 140 clockwise, as viewed in the orientation of fig. 1, the pulling member 110 is moved to the right; when the operator rotates the first knob 140 clockwise, the pulling member 110 is moved to the left. And when the pulling member 110 reciprocates, the first pipe member 130 is also driven to reciprocate.

In this embodiment, the minimally invasive surgical instrument device further includes an outer tube 160, one end of the outer tube 160 is connected to the body 100, and the other end of the outer tube 160 is connected to the surgical assembly 150. In some embodiments, one end of the outer tube 160 is fixed inside the body 100 and adjacent to the pulling member 110, and the first tube 130 extends from the pulling member 110 into the outer tube 160 and further through the outer tube 160. The first pipe member 130 is configured to reciprocate in the outer pipe 160 by the drawing member 110.

Referring to fig. 4 and 5, fig. 4 is a partially enlarged view of the first tube 130 and the surgical assembly 150 according to an embodiment of the present invention, and fig. 5 is a schematic view of the slider 131 according to an embodiment of the present invention, wherein the slider 131 of fig. 4 is shown in a transparent manner for the convenience of showing internal components. In this embodiment, the surgical assembly 150 includes a base 151, a head 152 and a pivot rod 153, wherein one end of the base 151 is connected to the outer tube 160 and the other end is pivoted to the head 152, one end of the first tube 130 away from the pulling element 110 passes through the outer tube 160 and is movably disposed in the base 151, and one end of the first tube 130 away from the pulling element 110 is pivoted to the head 152 through the pivot rod 153. In some embodiments, the portion of the base 151 pivotally connected to the head 152 and the portion of the pivot rod 153 pivotally connected to the first tube 130 and the head 152, respectively, can be realized by a latch.

In some embodiments, the base 151 includes a sliding groove 1511, the sliding groove 1511 includes a first stopping portion 1512 and a second stopping portion 1513, the first stopping portion 1512 is relatively adjacent to the outer tube 160, the second stopping portion 1513 is relatively adjacent to the head 152, the first tube 130 includes a sliding member 131, one end of the sliding member 131 is connected to one end of the first tube 130 away from the pulling member 110, and the other end of the sliding member 131 is pivoted to the head 152 by a pivot rod 153, and the sliding member 131 is configured to move reciprocally along the sliding groove 1511 between the first stopping portion 1512 and the second stopping portion 1513. When the first tube 130 is driven by the pulling element 110 to reciprocate, the sliding element 131 is driven by the first tube 130 to reciprocate in the sliding groove 1511, and the first stopping portion 1512 and the second stopping portion 1513 of the sliding groove 1511 limit the moving range of the sliding element 131.

Referring to fig. 7, fig. 7 is a second schematic operating diagram of a minimally invasive surgical instrument device according to an embodiment of the utility model. FIGS. 6 and 7 illustrate the operation of the instrument device. As shown in fig. 7, when the sliding member 131 is driven to abut against the first stopping portion 1512, the sliding member 131 pulls the head portion 152 through the pivot rod 153, so that the head portion 152 pivots relative to the base portion 151, and an included angle between the extending direction of the head portion 152 and the extending direction of the base portion 151 is 60 degrees; as shown in fig. 6, when the sliding member 131 is driven to abut against the second stopping portion 1513, the sliding member 131 pushes the head portion 152 through the pivot rod 153, so that the head portion 152 pivots reversely relative to the base portion 151, and an included angle between the extending direction of the head portion 152 and the extending direction of the base portion 151 is 0 degree. When the sliding member 131 reciprocates in the sliding groove 1511, the sliding member 131 pulls or pushes the head 152 through the pivot rod 153, so that the head 152 pivots in the forward direction or in the reverse direction within the range of 0 degree and 60 degrees relative to the base 151. Moreover, what drives the sliding part 131 and the first pipe 130 is the pulling part 110, and the external thread 113 of the pulling part 110 has four threads 113a, 113b, 113c and 113d, so that the four threads 113a, 113b, 113c and 113d can make the external thread 113 of the pulling part 110 and the internal thread 141 of the first knob 140 stably cooperate, so that the pulling part 110 can smoothly and stably reciprocate, and accordingly, the head part 152 driven by the sliding part 131 can smoothly and stably pivot in the forward direction or the reverse direction within the range of 0 degree and 60 degrees.

As shown in fig. 4 and 5, in some embodiments, the sliding member 131 includes a sleeve portion 1311 and a half-ring portion 1312, a rear end of the half-ring portion 1312 is connected to an outer peripheral surface of a front end of the sleeve portion 1311, a rear end of the sleeve portion 1311 is connected to an end of the first pipe 130 away from the pulling member 110, a front end of the half-ring portion 1312 is pivoted to the joint portion 152, a rear end of the half-ring portion 1312 corresponds to the first stopping portion 1512, and a front end of the sleeve portion 1311 corresponds to the second stopping portion 1513. When the sliding member 131 is driven to abut against the first stopping portion 1512, the rear end of the half ring portion 1312 abuts against the first stopping portion 1512; when the sliding member 131 is driven to abut against the second stopping portion 1513, the front end of the sleeve portion 1311 abuts against the second stopping portion 1513, so that the sliding member 131 is limited in the sliding groove.

As shown in fig. 1, 2, 6 and 7, in some embodiments, the minimally invasive surgical instrument device further includes a second knob 170 and a second tube 180, the second knob 170 is rotatably disposed on the body 100, the second tube 180 is embedded in a rotation center of the second knob 170 and extends out of the body 100, and the surgical assembly 150 is connected to an end of the second tube 180 away from the body 100. In some embodiments, the centers of rotation of the first and second knobs 140, 170 are coaxial, and the first and second knobs 140, 170 are spaced apart from each other. In some embodiments, the second tube 180 extends through the first tube 130, and the second tube 180 is configured to axially rotate the surgical assembly 150 as the second knob 170 is rotated. For example, the surgical assembly 150 includes a pair of surgical forceps 154, the pair of surgical forceps 154 is rotatably connected to the head 152, an end of the second tube 180 remote from the body 100 extends through the first tube 130 and the head 152 and is connected to the pair of surgical forceps 154, and the second tube 180 is rotated by the second knob 170 to correspondingly rotate the pair of surgical forceps 154.

As shown in fig. 1, 2, 6 and 7, in some embodiments, the minimally invasive surgical instrument device further includes a trigger member 190, the trigger member 190 is connected to the body 100, wherein the second tube 180 includes a joint 181, the joint 181 is connected to an end of the second tube 180 located in the body 100, the trigger member includes an engagement slot 191, the joint 181 is movably engaged in the engagement slot 191, and the trigger member 190 is configured to drive the second tube 180 to reciprocate in the first tube 130 through the engagement slot 191 and the joint 181. When the operator pulls or releases the trigger member, the engaging groove 191 of the trigger member is far away from or close to the second knob 170, and the joint 181 engaged in the engaging groove 191 will drive the second tube 180 to pull or push the second tube 180 to reciprocate the second tube 180 in the first tube 130, and the end of the second tube 180 far away from the body 100 will correspondingly pull or push the corresponding latch in the forceps 154, so that the forceps 154 will be closed or opened.

As shown in fig. 1 and 2, in some embodiments, the minimally invasive surgical instrument device further includes an input/output portion 200 and a conductive sheet 210, the input/output portion 200 is disposed on the body 100, the conductive sheet 210 is disposed in the body 100, one end of the conductive sheet 210 is connected to the input/output portion 200, and the other end of the conductive sheet 210 abuts against the second tube 180. The input/output portion 200 can transmit signals or current, and can be electrically connected to the second tube 180 through the conductive sheet 210 for further use. When the second tube 180 rotates, the conductive plate 210 continuously abuts against the outer peripheral surface of the second tube 180, so that the conductive plate 210 and the second tube 180 can maintain electrical connection.

In summary, according to the minimally invasive surgical instrument device of one or more embodiments of the present invention, the external thread of the traction member having the multi-start thread is rotatably engaged with the internal thread of the first knob, and the guiding hole of the traction member is guided to engage with the guiding tube, so that the first tube can reciprocate smoothly, and the operation stability of the surgical assembly of the minimally invasive surgical instrument device can be improved when the minimally invasive surgical instrument device is operated.

In the disclosure of the embodiments of the present invention, it is obvious to those skilled in the art that the foregoing embodiments are only examples and can be implemented in combination; those skilled in the art to which the present invention pertains may effect various changes, substitutions, and alterations without departing from the technical features of the present invention. Many variations of the utility model are possible in light of the above teachings. The present description defines the scope of the present invention, which encompasses the aforementioned methods and structures and their equivalents.

Claims (13)

1. A minimally invasive surgical instrument device, comprising:

a body;

the traction piece is movably arranged in the body and comprises a through hole, a guide hole and an external thread, the through hole penetrates through the traction piece along the axial direction of the traction piece and is positioned at the center of the traction piece, the guide hole penetrates through the traction piece along the axial direction of the traction piece, and the external thread is provided with a multi-thread and is arranged on the outer peripheral surface of the traction piece in a surrounding way along the axial direction of the traction piece;

a guide rod fixed in the body and extending through the guide hole;

one end of the first pipe fitting is connected with the traction piece and communicated with the through hole, and the other end of the first pipe fitting extends out of the body;

the first knob is rotatably arranged on the body and comprises an internal thread connected with the external thread, and the first knob is configured to rotate through the internal thread and the external thread to drive the traction piece to reciprocate along the guide rod; and

and the operation component is connected with one end of the first pipe fitting, which is far away from the traction piece.

2. The minimally invasive surgical instrument device according to claim 1, wherein the external thread is four-start threaded.

3. The apparatus of claim 1, wherein the two guide rods are spaced apart from each other, the two guide holes are located at two sides of the through hole, and the two guide rods pass through the two guide holes respectively.

4. The apparatus of claim 1, further comprising an outer tube, one end of the outer tube being coupled to the body and the other end of the outer tube being coupled to the surgical assembly, the first tube extending through the outer tube, and the first tube being configured to be reciprocated in the outer tube by the retractor.

5. The apparatus of claim 4, wherein the surgical assembly comprises a base, a head, and a pivot rod, one end of the base is connected to the outer tube and the other end is pivoted to the head, and one end of the first tube, which is away from the pulling member, is movably disposed through the base and is pivoted to the head through the pivot rod.

6. The apparatus of claim 5, wherein the base includes a sliding slot, the sliding slot includes a first stop portion and a second stop portion, the first stop portion is relatively adjacent to the outer tube, the second stop portion is relatively adjacent to the head, the first tube includes a sliding member, one end of the sliding member is connected to an end of the first tube away from the pulling member, and the other end of the sliding member is pivotally connected to the head through the pivot rod, the sliding member is configured to move reciprocally along the sliding slot between the first stop portion and the second stop portion.

7. The minimally invasive surgical instrument device according to claim 6, wherein the sliding member is configured such that an angle between the extending direction of the head and the extending direction of the base is 60 degrees when abutting against the first stop portion, and the angle between the extending direction of the head and the extending direction of the base is 0 degree when abutting against the second stop portion.

8. The apparatus of claim 6, wherein the sliding member comprises a sleeve portion and a half-ring portion, a rear end of the half-ring portion is connected to an outer peripheral surface of a front end of the sleeve portion, a rear end of the sleeve portion is connected to an end of the first tube away from the pulling member, a front end of the half-ring portion is pivotally connected to the head portion, a rear end of the half-ring portion corresponds to the first stopper portion, and a front end of the sleeve portion corresponds to the second stopper portion.

9. The apparatus of claim 1, further comprising a second knob rotatably disposed on the body and a second tube embedded in a rotation center of the second knob and extending outside the body, wherein the surgical assembly is connected to an end of the second tube away from the body.

10. The minimally invasive surgical instrument device of claim 9, wherein the second tube extends through the first tube and is configured to rotate the surgical assembly as the second knob is rotated.

11. The apparatus of claim 10, further comprising a trigger member coupled to the body, wherein the second tube comprises a joint coupled to an end of the second tube in the body, the trigger member comprises an engagement slot in which the joint is movably engaged, and the trigger member is configured to drive the second tube to reciprocate in the first tube via the engagement slot and the joint.

12. The apparatus of claim 10, further comprising an input/output unit and a conductive plate, wherein the input/output unit is disposed on the body, the conductive plate is disposed in the body, and one end of the conductive plate is connected to the input/output unit and the other end of the conductive plate abuts against the second tube.

13. The minimally invasive surgical instrument device according to claim 1, wherein the first knob includes a metal portion and a plastic portion, the metal portion is annular, the plastic portion surrounds an outer annular surface of the metal portion, and the internal thread is disposed on an inner annular surface of the metal portion.

Images