CN204797941U - Medical operation guider - Google Patents

Abstract

The utility model provides a medical operation guiding device. When it is necessary to drill a hole in the acetabular fossa, the tail end of the guide rod is inserted into the screw hole of the acetabular cup prosthesis, and the drill bit passes through the straight channel in the guide rod. Drill the acetabular fossa. Since the outer diameter of the second guide segment gradually increases from the end connected to the third guide segment to the end connected to the first guide segment, the guide rod can fit well into the screw hole of the acetabular cup prosthesis, thereby guiding the The rod can give good support to the drill bit passing through its inner straight passage, so that the position of the drill bit to be drilled on the acetabular socket is in line with the screw hole of the acetabular cup prosthesis, that is, it can make the acetabular socket The position of the screw hole is completely matched with the position of the screw hole on the acetabular cup prosthesis. It can be seen that the position of the screw hole in the acetabular fossa can be positioned very conveniently and accurately by using the medical operation guide device.

Description

A medical surgical guide

technical field

The utility model relates to the technical field of medical instruments, in particular to a medical operation guiding device.

Background technique

In minimally invasive total hip replacement surgery, when the acetabular cup prosthesis is implanted, acetabular screws need to be implanted to fix the acetabular cup prosthesis to the acetabular fossa. The position of the screw holes on the cup prosthesis corresponds to a full fit. Therefore, the accuracy of the position of the screw hole obtained when drilling the hole in the acetabular fossa has become a decisive factor affecting the fixation of the acetabular cup prosthesis and the acetabular fossa, and it will also directly affect the effect of the operation. However, in the prior art, the accuracy of the position of the screw holes on the acetabular fossa depends entirely on the experience of the surgeon, which not only increases the difficulty of the operation, but also makes the accuracy of the position of the screw holes on the acetabular fossa not high enough.

Therefore, how to provide a surgical tool that can accurately locate the position of the screw hole in the acetabular fossa, so that the position of the screw hole on the acetabular fossa and the position of the screw hole on the acetabular cup prosthesis can be fully matched has become a technology in the art. A difficult problem that people need to solve urgently.

Utility model content

The purpose of this utility model is to provide a medical surgical guide device to solve the problem that in the prior art, the accuracy of the position of the screw hole on the acetabular fossa depends entirely on the experience of the surgeon, the difficulty of the operation and the position of the screw hole on the acetabular fossa The problem of insufficient precision.

In order to solve the above technical problems, the utility model provides a medical surgical guide device, the medical surgical drill sleeve includes: a guide rod, the inside of the guide rod has a straight channel; the guide rod includes first guide segments connected in sequence , the second guide section and the third guide section, wherein the free end of the first guide section is the head end, and the free end of the third guide section is the tail end; the outer diameter of the second guide section is free from the The end connected to the third guide segment becomes gradually larger toward the end connected to the first guide segment.

Optionally, in the medical operation guiding device, the diameter of the straight channel gradually decreases from the head end to the tail end.

Optionally, in the medical operation guiding device, the linear channel includes a first section near the head end and a second section near the tail end, wherein the diameters of any positions of the first section are the same , the diameter of any position of the second section is the same, and the diameter of the first section is larger than that of the second section.

Optionally, in the medical operation guiding device, the linear channel further includes a third section, the first section and the second section are connected through the third section, and the diameter of the third section is It gradually becomes smaller from the end connected with the first section to the end connected with the second section.

Optionally, in the medical operation guiding device, the first segment is directly connected to the second segment.

Optionally, in the guide device for medical operation, the guide rod has an opening inside, the opening is close to the head end, the opening communicates with the straight channel, and the opening faces the head end Open and the diameter of any position of the opening is larger than the diameter of any position of the linear channel.

Optionally, in the medical operation guide device, the surface of the tail end of the guide rod is an arc surface.

Optionally, in the medical operation guiding device, the surface of the second guiding segment is an arc surface.

Optionally, in the medical operation guiding device, an anti-slip structure is provided on the outer surface of the first guiding section.

Optionally, in the medical operation guide device, the anti-slip structure is a stripe structure or a grid structure.

Optionally, in the medical operation guiding device, the outer diameter of any position of the first guiding segment is the same; the outer diameter of any position of the third guiding segment is the same.

Optionally, in the medical operation guiding device, the length of the third guiding section is 0.5mm-1mm.

Optionally, in the medical operation guiding device, the length of the second guiding segment is 2mm-3mm.

Optionally, in the medical operation guide device, the length of the guide rod is 180mm-200mm.

Optionally, in the medical operation guide device, the outer diameter of the guide rod is 6mm-8mm.

Optionally, in the medical operation guiding device, the diameter of the straight channel is 3mm-5mm.

Optionally, the medical operation guide device is a drill sleeve.

With the medical surgical drill sleeve provided by the utility model, when it is necessary to drill a hole on the acetabular socket, insert the tail end of the guide rod into the screw hole of the acetabular cup prosthesis, and the drill bit passes through the straight passage in the guide rod and then The acetabular fossa is drilled. Since the outer diameter of the second guide segment gradually increases from the end connected to the third guide segment to the end connected to the first guide segment, the guide rod can fit well into the screw hole of the acetabular cup prosthesis, thereby guiding the The rod can give good support to the drill bit passing through its inner straight passage, so that the position of the drill bit to be drilled on the acetabular socket is in line with the screw hole of the acetabular cup prosthesis, that is, it can make the acetabular socket The position of the screw hole is completely matched with the position of the screw hole on the acetabular cup prosthesis. It can be seen that the position of the screw hole in the acetabular fossa can be positioned very conveniently and accurately by using the medical surgical drill sleeve, which not only reduces the difficulty of the operation (drilling), but also makes the position of the screw hole on the acetabular fossa very high.

Description of drawings

Fig. 1 is the structural representation of the medical operation drill sleeve of the utility model embodiment;

Fig. 2 is the enlarged schematic diagram of structure A in the medical operation drill sleeve shown in Fig. 1;

Fig. 3 is the enlarged schematic diagram of structure B in the medical operation drill sleeve shown in Fig. 1;

Fig. 4 is the enlarged schematic diagram of structure C in the medical operation drill sleeve shown in Fig. 1;

Fig. 5 is a schematic view of the use of the medical operation drill sleeve shown in Fig. 1;

Fig. 6 is a schematic diagram of a linear passage in an embodiment of the utility model;

Fig. 7 is a schematic diagram of another linear passage in the embodiment of the present invention;

Fig. 8 is a schematic diagram of another linear channel of the embodiment of the present invention.

Detailed ways

The medical operation drill sleeve proposed by the utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description and claims, the advantages and features of the utility model will be more clear. It should be noted that all the drawings are in very simplified form and use inaccurate scales, which are only used to facilitate and clearly illustrate the purpose of the embodiment of the present utility model.

Please refer to Fig. 1 to Fig. 4, wherein, Fig. 1 is the structural representation of the medical operation drill sleeve of the utility model embodiment; Fig. 2 is the enlarged schematic diagram of structure A in the medical operation drill sleeve shown in Fig. 1; Fig. 3 is the schematic diagram of Fig. 1 shows an enlarged schematic diagram of structure B in the medical surgical drill sleeve; FIG. 4 is an enlarged schematic diagram of structure C in the medical surgical drill sleeve shown in FIG. 1 . As shown in Figures 1 to 4, the medical surgical drill sleeve 1 includes: a guide rod 10 having a straight passage 11 inside; the guide rod 10 includes a first guide section 100, and A second guide segment 101 connected by a guide segment 100 and a third guide segment 102 connected with the second guide segment 101, wherein the free end of the first guide segment 100 is a head end 103, and the third guide segment The free end of the segment 102 is the tail end 104 ; the outer diameter of the second guide segment 101 gradually increases from the end connected to the third guide segment 102 to the end connected to the first guide segment 100 .

Please refer to FIG. 5 , which is a schematic diagram of the use of the medical surgical drill sleeve shown in FIG. 1 . 1 to 5, when it is necessary to drill a hole in the acetabular socket, insert the tail end 104 of the guide rod 10 into the screw hole 5 of the acetabular cup prosthesis 4, and the drill bit 2 passes through the straight channel in the guide rod 10 After 11 the acetabular fossa was drilled. Since the outer diameter of the second guide section 101 gradually increases from the end connected with the third guide section 102 to the end connected with the first guide section 100, the guide rod 10 can fit the acetabular cup prosthesis 4 well. Screw holes 5, so that the guide rod 10 can give good support to the drill bit 2 passing through the straight channel 11 in it, so that the drill bit 2 will be drilled with the screw of the acetabular cup prosthesis 4 on the described acetabular fossa. The holes 5 are facing each other, that is, the positions of the screw holes on the acetabular fossa can be completely matched with the positions of the screw holes 5 on the acetabular cup prosthesis 4 . In particular, through the support of the guide rod 10, the drilling direction of the drill bit 2 is perpendicular to the spherical surface of the acetabular cup prosthesis 4, so that the acetabular cup prosthesis 4 and the acetabular socket 5 are more stable after being locked by screws . It can be seen that the position of the screw hole in the acetabular fossa can be positioned very conveniently and accurately by using the medical surgical drill sleeve 1 , which not only reduces the difficulty of the operation (drilling), but also makes the position of the screw hole on the acetabular fossa very high.

Next, please continue to refer to FIG. 1 to FIG. 4 , this embodiment will further describe the medical surgical drill sleeve 1 .

As shown in FIG. 1 and FIG. 2, in the embodiment of the present application, the guide rod 10 has an opening 12 inside, the opening 12 is close to the head end 103, and the opening 12 communicates with the linear passage 11, The opening 12 opens toward the head end 103 (that is, the diameter of the end of the opening 12 near the head end 103 is larger than the diameter of the end near the tail end 104) and the diameter of any position of the opening 12 It is larger than the diameter of any position of the linear passage 11. Through the opening 12, the drill bit can be inserted into the straight channel 11 very conveniently, so as to facilitate drilling on the acetabular fossa.

Further, please refer to FIG. 1 and FIG. 3 , in the embodiment of the present application, the straight channel 11 includes a first section 110 close to the head end 103 and a second section 111 close to the tail end 104, wherein, The diameter at any position of the first section 110 is the same (that is, the first section 110 is a cylindrical passage), and the diameter at any position of the second section 111 is the same (that is, the second section 111 is also a cylindrical channel). channel), the diameter of the first segment 110 is larger than the diameter of the second segment 111 (that is, the diameter of any position of the first segment 110 is larger than the diameter of any position of the second segment 111 ). Here, the first segment 110 is directly connected to the second segment 111 . By designing the straight passage 11 into a two-section structure, and the diameter of the first section 110 near the head end 103 is larger than the diameter of the second section 111 near the tail end 104, the drill bit can be easily inserted into the straight passage 11. Pass through, and can fit the drill bit through the rear section of the straight channel 11 (that is, the second section 111) so that the guide rod 10 can give the drill bit good support, so that the screw hole drilled by the drill bit on the acetabular socket is in line with the acetabulum The position of the screw holes on the cup prosthesis corresponds to a full fit.

In order to further illustrate the shape of the linear channel 11 in this embodiment, the present application provides FIG. 6 , which only schematically shows the structure of the linear channel 11 in the medical surgical drill sleeve 1 . As shown in FIG. 6 , it can be clearly seen that the linear channel 10 here only includes a connected first section 110 and a second section 111 , wherein the diameter of the first section 110 is larger than that of the second section 111 .

In other embodiments of the present application, the linear channel 11 may also have different implementations. The present application also provides two different structures in Fig. 7 and Fig. 8 .

Specifically, as shown in FIG. 7, here, the linear channel 11 not only includes a first section 110 near the head end 103 and a second section 111 near the tail end 104, wherein the first section The diameter at any position of 110 is the same, the diameter at any position of the second segment 111 is the same, the diameter of the first segment 110 is larger than the diameter of the second segment 111; also includes a third segment 112, the first segment 110 and the second section 111 are connected by the third section 112, and the diameter of the third section 112 gradually decreases from the end connected with the first section 110 to the end connected with the second section 111 . Preferably, (the diameter of) the first segment 110 smoothly transitions to (the diameter of) the second segment 111 through the third segment 112 . Here, through the third section 112, the drill hole can be smoothly passed from the first section 110 to the second section 111, so that the guide rod 10 can give the drill bit a good support, and the drill bit can be moved in the straight passage 11. Easy and quick pass through.

Please refer to FIG. 8 , which is another implementation of the linear channel 11 . The linear channel 11 shown in Figure 8 is quite different from the linear channel 11 shown in Figure 6 and Figure 7, and it is not realized in a multi-segment manner, and the entire linear channel 11 shown in Figure 8 can be considered as a one-stage structure , whose diameter gradually decreases from the head end 103 to the tail end 104 . Therefore, the linear channel 11 shown in FIG. 8 can not only enable the guide rod 10 to give better support to the drill bit, but also enable the drill bit to pass through the linear channel 11 conveniently and quickly.

The above only shows several specific implementations of the linear channel 11, and other implementations can also be used. For example, it can still adopt a two-stage structure, wherein the section near the tail end adopts the first section shown in Figure 6 or Figure 7. The second section 111, and the third section 112 shown in Figure 7 is used for the section near the head end, which can also be very well realized so that the guide rod 10 can give the drill bit a good support, and can make the drill bit in the straight channel 11 Easy and quick pass through. It is believed that those skilled in the art can make more deformations of the linear channel on this basis, which is not limited in the present application.

Next, please continue to refer to FIG. 1 and FIG. 4. Through the enlarged structure of FIG. The outer diameters are the same (that is, the outer surface of the third guide section 102 is cylindrical). Considering the depth of the screw hole of the acetabular cup prosthesis, preferably, the length of the third guide section 102 is 0.5mm-1mm, and the length of the second guide section 101 is 2mm-3mm. Further, considering that the side wall of the screw hole of the acetabular cup prosthesis is usually a circular arc surface, therefore, the surface of the second guide section 101 is preferably a circular arc surface, so as to be compatible with the screw hole of the acetabular cup prosthesis. Better fit, so that the guide rod 10 can give better support to the drill bit passing through its inner straight channel 11, so that the screw hole drilled by the drill bit on the acetabular fossa and the screw on the acetabular cup prosthesis The hole locations correspond to a full fit.

Further, it can be seen from the enlarged structure of Fig. 4 that in the embodiment of the present application, the surface of the tail end 104 of the guide rod 10 (that is, the bottom surface of the guide rod 10) is a circular arc surface, thereby avoiding the guide The tail end 104 of the rod 10 injures the acetabular cup prosthesis.

Please continue to refer to FIG. 1 , in the embodiment of the present application, an anti-slip structure 13 is further provided on the guide rod 10 , especially, the anti-slip structure 13 is located on the outer surface of the first guide segment 100 . Preferably, the anti-slip structure is a stripe structure or a grid structure, that is, knurling is used to increase friction and play an anti-slip effect, which will not be described in detail in this application.

Wherein, during the use of the medical surgical drill sleeve 1, both the second guide section 101 and the third guide section 102 will be located in the human body, and the operator grasps the medical surgical drill sleeve 1 mainly by holding the first guide section 100 To achieve, therefore, only the anti-skid structure 13 is provided on the first guide segment 100 . In the embodiment of the present application, the outer diameter of any position of the first guide section 100 is the same (that is, the shape of the first guide section 100 is cylindrical), so that it is also convenient for the operator to hold the guide rod 10 .

Further, considering the depth of the guide rod 10 entering into the human body and the convenience of holding the guide rod 10, preferably, the length of the guide rod 10 is 180mm-200mm.

In addition, in order to match the diameter of the existing drill bit, so that the guide rod 10 can better fit the drill bit, so as to give the drill bit a good support, preferably, the diameter of the linear channel 10 is 3mm-5mm, That is, the diameter of any position of the linear channel 11 is 3 mm to 5 mm.

In the existing minimally invasive hip joint replacement surgery, in the step before drilling the acetabular socket, a sheath (sheath 3 as shown in Figure 5) will usually be left in the human body. In the case of the medical surgical drill sleeve 1 provided by the present application, the sheath can be taken away or left behind. When the sheath is left, in order to cooperate with the sheath, preferably, the outer diameter of the guide rod 10 is 6mm-8mm, that is, the outer diameter of any position of the guide rod 10 is 6mm-8mm.

In summary, with the medical surgical drill sleeve provided by the embodiment of the present invention, when it is necessary to drill a hole in the acetabular fossa, the tail end of the guide rod is inserted into the screw hole of the acetabular cup prosthesis, and the drill bit passes through the guide rod The acetabular fossa is drilled behind the straight channel within. Since the outer diameter of the second guide segment gradually increases from the end connected to the third guide segment to the end connected to the first guide segment, the guide rod can fit well into the screw hole of the acetabular cup prosthesis, thereby guiding the The rod can give good support to the drill bit passing through its inner straight passage, so that the position of the drill bit to be drilled on the acetabular socket is in line with the screw hole of the acetabular cup prosthesis, that is, it can make the acetabular socket The position of the screw hole is completely matched with the position of the screw hole on the acetabular cup prosthesis. It can be seen that the position of the screw hole in the acetabular fossa can be positioned very conveniently and accurately by using the medical surgical drill sleeve, which not only reduces the difficulty of the operation (drilling), but also makes the position of the screw hole on the acetabular fossa very high. Of course, after referring to this embodiment, those skilled in the art can also apply the drill bushing structure provided by this embodiment to other guide devices to achieve the functions of positioning and registration, and this utility model does not make any limit.

The above description is only a description of the preferred embodiments of the present utility model, and is not any limitation to the scope of the present utility model. Any changes and modifications made by those of ordinary skill in the field of the utility model according to the above disclosures all belong to the protection scope of the claims .

Claims (17)

1. a medical operation guider, is characterized in that, comprising: guide post, and the inside of described guide post has a beeline channel; Described guide post comprises the first guide section, the second guide section and the 3rd guide section that connect successively, and wherein, the free end of described first guide section is head end, and the free end of described 3rd guide section is tail end; Outer one end be connected with described 3rd guide section without leave of described second guide section becomes large gradually to the one end be connected with described first guide section.

2. medical operation guider as claimed in claim 1, it is characterized in that, the diameter of described beeline channel diminishes to described tail end gradually from described head end.

3. medical operation guider as claimed in claim 1, it is characterized in that, described beeline channel comprises the first paragraph near described head end and the second segment near described tail end, wherein, the diameter of the optional position of described first paragraph is identical, the diameter of the optional position of described second segment is identical, and the diameter of described first paragraph is larger than the diameter of described second segment.

4. medical operation guider as claimed in claim 3, it is characterized in that, described beeline channel also comprises the 3rd section, described first paragraph is connected by described 3rd section with described second segment, and the diameter of described 3rd section diminishes to the one end be connected with described second segment gradually from the one end be connected with described first paragraph.

5. medical operation guider as claimed in claim 3, it is characterized in that, described first paragraph is directly connected with described second segment.

6. the medical operation guider according to any one of Claims 1 to 5, it is characterized in that, described guide post inside has an opening, described opening is near described head end, described opening is communicated with described beeline channel, and described opening surface to open and the diameter of described opening optional position is larger than the diameter of described beeline channel optional position to described head end.

7. the medical operation guider according to any one of Claims 1 to 5, is characterized in that, the surface of the described tail end of described guide post is arc surface.

8. the medical operation guider according to any one of Claims 1 to 5, is characterized in that, the surface of described second guide section is arc surface.

9. the medical operation guider according to any one of Claims 1 to 5, is characterized in that, the outer surface of described first guide section is provided with anti-skid structure.

10. medical operation guider as claimed in claim 9, it is characterized in that, described anti-skid structure is striated structure or network.

11. medical operation guiders according to any one of Claims 1 to 5, it is characterized in that, the external diameter of the optional position of described first guide section is identical; The external diameter of the optional position of described 3rd guide section is identical.

12. medical operation guiders according to any one of Claims 1 to 5, it is characterized in that, the length of described 3rd guide section is 0.5mm ~ 1mm.

13. medical operation guiders according to any one of Claims 1 to 5, it is characterized in that, the length of described second guide section is 2mm ~ 3mm.

14. medical operation guiders according to any one of Claims 1 to 5, it is characterized in that, the length of described guide post is 180mm ~ 200mm.

15. medical operation guiders according to any one of Claims 1 to 5, it is characterized in that, the external diameter of described guide post is 6mm ~ 8mm.

16. medical operation guiders according to any one of Claims 1 to 5, it is characterized in that, the diameter of described beeline channel is 3mm ~ 5mm.

17. medical operation guiders according to any one of Claims 1 to 5, it is characterized in that, described medical operation guider is drill bushing.