Fretsaw control system for pelvic deep osteotomy

Abstract

The utility model provides a fretsaw control system for pelvic deep osteotomy, the system comprises a fretsaw, a guider and a groove type guiding pry, one end of the guider is provided with a fretsaw input port, the other end of the guider is provided with a fretsaw output port, the guider enables the fretsaw to pass through a part needing osteotomy through the groove type guiding pry, and the fretsaw input port is connected with the groove type guiding pry. The fretsaw is arranged in the guider, one end of the fretsaw enters from the fretsaw input port, and the other end of the fretsaw is output from the fretsaw output port. The osteotomy device can be used for osteotomy at different parts, and the handle is a detachable rotary buckle combination device, so that the osteotomy device can be simply and conveniently mounted and dismounted when being used at different parts.

Description

[Technical Field]

[0001] This utility model relates to the field of medical device technology, and in particular to a wire saw control system for deep pelvic osteotomy. [Background Technology]

[0002] Deep pelvic osteotomy is a commonly used osteotomy method in pediatric hip joint orthopedic surgery. Surgeries such as Salter osteotomy and triple osteotomy involve the complete transection of deep pelvic bones, such as the ischial ramus or iliac ramus. Only in this way can the surgical goal of changing the direction of the acetabulum and improving the femoral head containment be achieved.

[0003] For example, in a triple osteotomy of the pelvis, the ischium, ilium, and pubis must be completely severed to allow for complete rotation of the acetabulum to achieve a satisfactory position and good head-acetabular coverage. Currently used surgical methods require ischium osteotomy to be performed under intraoperative fluoroscopic monitoring using a bone scalpel. The ischium is located deep, making it the most difficult part of the triple osteotomy to master. The ischium ramus is deeply embedded beneath the obturator externus muscle, covered by muscle, and adjacent to major blood vessels on both the medial and lateral sides. It is reinforced posteriorly by the sacrospinous ligament. The medial and lateral sides and the posterior aspect cannot be visualized intraoperatively, and the completeness of the osteotomy can only be determined via fluoroscopy. Even slight movement or deviation of the bone scalpel position can lead to damage to related organs and serious surgical complications. Even with very accurate scalpel positioning, the toughness of the medial ischium cortex and the reinforcement by ligaments often make it difficult to determine intraoperatively whether the ischium ramus has been completely severed. An incompletely severed ischium ramus will inevitably restrict the rotation of the acetabular osteotomy fragment, affecting the surgical outcome of the triple osteotomy and potentially leading to surgical failure. Therefore, the difficulty of ischial ramus osteotomy has become a major factor restricting the widespread adoption of the triple osteotomy technique, making it the osteotomy with the longest learning curve among this type of surgery. Iliac osteotomy can be performed by using right-angle clamps to pass a wire saw through the greater sciatic foramen and then directly cutting the bone. Although the operation is relatively simple, in older children, the length and curvature of the right-angle clamps often do not match the posterior pelvic wall, making it difficult for the wire saw to pass through, or posing a risk of damage to the nerves and blood vessels adjacent to the greater sciatic foramen. The same problem exists in pubic ramus osteotomy, where important blood vessels and organs are also adjacent. Once damaged, hemostasis cannot be achieved during surgery, and there have been reports of intraoperative death due to excessive blood loss.

[0004] In this context, it is particularly important to develop a unique surgical instrument that can be used for pelvic osteotomy around the acetabulum, ensuring complete severance of the ischium, ilium, and pubis while avoiding potential damage to vital organs when using a bone scalpel for osteotomy.

[0005] Therefore, it is necessary to study a wire saw control system for deep pelvic osteotomy to address the shortcomings of existing technologies and to solve or mitigate one or more of the aforementioned problems. [Utility Model Content]

[0006] In view of this, the present invention provides a wire saw control system for deep pelvic osteotomy, which can be used for osteotomy in different parts. The handle is a detachable rotating buckle connection device, which can be easily installed and disassembled when used in different parts.

[0007] On the one hand, this utility model provides a wire saw control system for deep pelvic osteotomy. The wire saw control system includes a wire saw, a guide, and a slotted guide pry bar. One end of the guide is provided with a wire saw input port, and the other end is provided with a wire saw output port. The wire saw is installed in the guide and enters from the wire saw input port at one end and exits from the wire saw output port at the other end.

[0008] In addition to the aspects described above and any possible implementations, a further implementation is provided in which the guide includes a long-handled handheld section and a curved-head traction section, one end of the long-handled handheld section having a long-handled connecting joint and the other end connected to the curved-head traction section, the curved-head traction section being located at the lesion site.

[0009] In addition to the aspects described above and any possible implementations, a further implementation is provided in which the long-handled connector can be connected to an external device.

[0010] In addition to the aspects and any possible implementations described above, a further implementation is provided in which the curved head traction section includes an arc-shaped traction part and a straight traction part, the straight traction part being connected to the arc-shaped traction part, and the middle part of the straight traction part being connected to the long handle hand section.

[0011] In addition to the aspects and any possible implementations described above, a further implementation is provided in which one end of the arc-shaped traction part is provided with a curved head through hole for the wire saw to enter, and the other end is the output port of the wire saw, wherein the curved head through hole is the input port of the wire saw.

[0012] In addition to the aspects described above and any possible implementation, a further implementation is provided in which the arc of the arc-shaped traction portion is 90° to 270°.

[0013] In addition to the aspects described above and any possible implementation, a further implementation is provided in which the maximum width of the arc-shaped traction portion is 5-80 mm.

[0014] In addition to the aspects and any possible implementations described above, a further implementation is provided in which the slotted guide pryer includes a handle and a support portion, the handle being connected to the support portion, the support portion having a slot, and the guide being disposed on the slot.

[0015] In addition to the aspects and any possible implementations described above, a further implementation is provided in which the arc-shaped traction part and the linear traction part are detachably connected.

[0016] In addition to the aspects described above and any possible implementations, a further implementation is provided in which the wire saw is an osteotomy wire saw used in orthopedic surgery.

[0017] Compared with the prior art, the present invention can achieve the following technical effects:

[0018] 1) This utility model differs from the traditional osteotomy knife wire saw control system. It makes full use of the integrity of orthopedic wire saw osteotomy, and with the groove device, it can smoothly pass through the ischium, ilium and pubis, so as to quickly, safely and completely cut off the three bones around the acetabulum. It overcomes the defects of using traditional osteotomy knife, breaks through the technical bottleneck of triple osteotomy of the pelvis, and makes the problem of deep osteotomy of the pelvis safer, simpler and more reliable.

[0019] 2) This utility model has various specifications and models based on the morphological characteristics of bones, and can be applied to osteotomy in different parts.

[0020] Of course, any product implementing this utility model does not necessarily need to achieve all of the above-mentioned technical effects at the same time. [Attached Image Description]

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a structural diagram of the guide of a wire saw control system provided in one embodiment of the present invention;

[0023] Figure 2 This is an overall structural diagram of the slotted guide skid of a wire saw control system provided in one embodiment of the present invention;

[0024] Figure 3 This is a diagram illustrating one embodiment of the slotted guide skid of the wire saw control system provided in this utility model.

[0025] Figure 4 This is a diagram illustrating one embodiment of the slotted guide skid of the wire saw control system provided in this utility model.

[0026] In the figure:

[0027] 11-Long handle handpiece; 112-Long handle connecting section; 12-Curved head traction section; 121-Arc-shaped traction part; 122-Straight traction part; 123-Curved head through hole; 13-Wire saw output port; 21-Bearing part; 22-Handpiece; 23-Groogging.

Detailed Implementation Methods

[0028] To better understand the technical solution of this utility model, the embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0029] It should be understood that the described embodiments are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] The terminology used in the embodiments of this utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The singular forms “a,” “the,” and “the” used in the embodiments of this utility model and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0031] Example 1:

[0032] like Figure 1 As shown, this utility model provides a wire saw control system for deep pelvic osteotomy. The wire saw control system includes a wire saw, a guide, and a slotted guide skid. One end of the guide is provided with a wire saw input port, and the other end is provided with a wire saw output port 13. The guide is delivered to the lesion site through the slotted guide skid. The wire saw is set in the guide and enters from the wire saw input port at one end and exits from the wire saw output port 13 at the other end.

[0033] The guide includes a long handle hand section 11 and a curved head traction section 12. One end of the long handle hand section 11 is provided with a long handle connecting section 112, and the other end is connected to the curved head traction section 12. The curved head traction section 12 is located at the lesion site.

[0034] The long handle handpiece 11 can be connected to an external device at one end of the long handle connecting section 112. This connection method is quick to connect and disconnect, such as a quick-connect handle.

[0035] The curved head traction section 12 includes an arc-shaped traction part 121 and a straight traction part 122. The straight traction part 122 is connected to the arc-shaped traction part 121, and the middle position of the straight traction part 122 is connected to the long handle hand section 11.

[0036] One end of the arc-shaped traction part 121 is provided with a curved head through hole 123 for the wire saw to enter, and the other end is the wire saw output port 13. The curved head through hole 123 is the wire saw input port.

[0037] The arc of the arc-shaped traction part 121 is 90° to 270°.

[0038] The maximum width of the arc-shaped traction part 121 is 5-80mm.

[0039] like Figure 2 As shown, the slotted guide pry includes a handheld part 22 and a support part 21. The handheld part 22 is connected to the support part 21. The support part 21 is provided with a slot 23, and the guide is disposed on the slot 23.

[0040] At the very front of the entire slotted guide skid, i.e. at the very front of the slotted position, there is a small tongue and a slight curve, which facilitates entry into the operating area through deep tissues.

[0041] The arc-shaped traction part 121 and the linear traction part 122 are detachably connected, generally by a snap-fit ​​connection. The size of the entire arc-shaped traction part 121 can be determined according to the size of the bone in the specific bone surgery site. At the same time, the shape, the corresponding curvature, and the maximum width are all adjustable. Multiple models and specifications can be mass-produced to meet different surgical requirements.

[0042] In one specific embodiment, such as Figure 3 As shown, the supporting part 21 has a linear structure;

[0043] In one specific embodiment, such as Figure 4 As shown, the bearing part 21 is a curved structure with an inclined angle, which together with the front end of the slotted position forms the head of the guide pry with a certain curvature.

[0044] In one specific embodiment, the wire saw is an osteotomy wire saw used in orthopedic surgery.

[0045] Example 2:

[0046] Unlike Embodiment 1, in this embodiment, the arc-shaped traction unit and the linear traction unit are fixedly connected, typically by welding or integral machining. Welding or integral machining ensures greater stability between the arc-shaped and linear traction units, preventing loosening during surgery. A long-handled connecting joint is also provided between the linear traction unit and the external device, allowing the external device to be adapted to various sizes of arc-shaped and linear traction units. Furthermore, the size of the arc-shaped traction unit can be determined according to the bone size of the specific surgical site, and its shape and corresponding maximum arc width are adjustable, allowing for mass production of various models and specifications to meet different surgical requirements.

[0047] This utility model device is a quick-disassembly kit system. The wire saw control system is available in different models for osteotomy at different sites. The long-handle connecting joint is a quick-disassembly device, allowing for easy installation and disassembly when used in different locations. With the patient in a supine position, the ischial ramus of the pelvis is exposed through the medial adductor muscle opening. The soft tissue around the ischium is bluntly dissected. The installed slotted guide lever is inserted along the medial side of the obturator foramen of the pelvis. After confirming that the guide is engaged with the ischial ramus, the wire saw is guided through the guide, located and led out from the outside. Adjusted to the appropriate position using the slotted guide lever and guide, the ischium is completely severed under the protection of the slotted guide lever. Using the same method, the greater sciatic notch is successfully passed through to completely sever the ilium and the relatively superficial pubic ramus, completing a triple osteotomy of the pelvis.

[0048] The osteotomy direction and location can be controlled using this invention, ensuring complete and safe bone resection. It also has the advantages of minimal trauma and few side effects, and can basically achieve the surgical goal of minimally invasive osteotomy.

[0049] The foregoing has provided a detailed description of a wire saw control system for deep pelvic osteotomy according to embodiments of this application. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this application; furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

[0050] Certain terms are used in the specification and claims to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The terms "comprising" and "including" used throughout the specification and claims are open-ended and should be interpreted as "comprising / including but not limited to". "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error. The following descriptions in the specification are preferred embodiments for carrying out this application; however, these descriptions are for the purpose of illustrating the general principles of this application and are not intended to limit the scope of this application. The scope of protection of this application shall be determined by the appended claims.

[0051] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0052] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0053] The foregoing description illustrates and describes several preferred embodiments of this application. However, as previously stated, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A wire saw steering system for deep pelvic osteotomies, characterized in that, The system includes a wire saw, a guide, and a slotted guide skid. The guide has a wire saw input port at one end and a wire saw output port at the other end. The guide is delivered to the lesion site via the slotted guide skid. The wire saw is installed inside the guide and enters from the wire saw input port at one end and exits from the wire saw output port at the other end. The guide includes a long-handled handheld section and a curved head traction section. One end of the long-handled handheld section is provided with a long-handled connecting joint, and the other end is connected to the curved head traction section. The curved head traction section is located at the lesion site. The long-handle connecting joint can be connected to external devices; The curved head traction section includes an arc-shaped traction part and a straight traction part. The straight traction part is connected to the arc-shaped traction part, and the middle position of the straight traction part is connected to the long handle hand section. One end of the arc-shaped traction part is provided with a curved head through hole for the wire saw to enter, and the other end is the output port of the wire saw. The curved head through hole is the input port of the wire saw. The arc of the arc-shaped traction part is 90°~270°; The maximum width of the arc-shaped traction part is 5-80mm; The slotted guide pry includes a hand-held part and a support part, the hand-held part is connected to the support part, the support part is provided with a slot, and the guide is disposed on the slot; The arc-shaped traction part and the linear traction part are fixedly connected and integrally machined.

2. The handling system of claim 1, wherein, The wire saw is a bone-cutting wire saw used in orthopedic surgery.

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