Fascia implantation device for pituitary tumor resection operation

Abstract

The invention provides a fascia implantation device for pituitary tumor resection surgery. The fascia implantation device comprises a main body tube, a mounting disc, a movable rod and a movable sleeve, when the fascia is sleeved, the fascia is arranged on the mounting disc in a sleeving mode, the movable sleeve is moved downwards to drive the limiting ring to move downwards and gradually sleeve the outer side of the mounting disc, and then the fascia is extruded and fixed between the limiting ring and the mounting disc; when the fascia is placed, the mounting disc extends into the saddle bottom, and the limiting ring is moved downwards until the limiting ring is separated from the mounting disc; after the movable rod is moved upwards to drive the supporting wire ring to stretch out of the main body pipe and open the fascia, the bottom of the supporting wire ring is tightly attached to the inner side of the saddle bottom, then the supporting wire ring is driven to retract into the main body pipe to release the fascia, and finally the fascia is basically attached to the defective area of the saddle bottom in a flattened mode. The fascia can be flatly fed into the saddle bottom and rapidly laid, the laying operation process is simplified, and the operation duration is shortened; and when the fascia is conveyed, most of the fascia can be stored in the device, so that the probability that the fascia is polluted is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically to a fascia placement device for pituitary tumor resection surgery. Background Technology

[0002] Pituitary tumors are tumors that grow on the pituitary gland and are one of the most common tumors in the brain (such as...). Figure 13 As shown in the image, most pituitary tumors are benign, caused by abnormal differentiation of cells in the anterior and posterior lobes of the pituitary gland or epithelial cells of the craniopharynx. The incidence of pituitary tumors in the population is approximately 10-20 per 100,000. Pituitary tumors may lead to excessive secretion of pituitary hormones, causing a series of metabolic disorders and organ damage; secondly, pituitary tumors may also compress the optic nerve, causing visual impairment, and in severe cases, blindness.

[0003] Currently, the most common surgical treatment for pituitary tumors is transsphenoidal pituitary tumor resection. During the procedure, surgical instruments are inserted into the sphenoid sinus cavity through the nasal cavity, and a portion of the sella turcica floor is removed to expose the affected area (e.g., Figure 14 (as shown), and then the pituitary tumor was removed; because the patient's sellar floor bone and dura mater structures were damaged during the operation (such as... Figure 15 As shown in the figure, to prevent postoperative cerebrospinal fluid leakage, after removing the pituitary tumor, absorbable hemostatic material is first filled into the sellar floor defect area to provide basic support and assist in hemostasis. Then, the patient's autologous fascia tissue is laid on the inner side of the sellar floor. Next, biological adhesive is used to bond and fix the fascia tissue to form a closed repair structure, thereby blocking the channels that may lead to cerebrospinal fluid leakage.

[0004] However, this method of saddle floor repair has the following problems: the fascia tissue is soft and prone to adhesion, and after being inserted into the sphenoid sinus cavity through the nasal passage, it will fold and stack, requiring the doctor to manually unfold it (e.g. Figure 16 As shown), then insert it into the inner side of the saddle bottom defect area and adjust its position to achieve precise coverage (as shown). Figure 17 (As shown in the image) In actual clinical practice, due to the lack of specialized instruments, doctors often use endoscopic forceps to grasp the fascia tissue and then insert it into the sphenoid sinus cavity through the nasal cavity. During the insertion process, the fascia tissue is prone to friction and contact with the nasal mucosa, leading to contamination of the fascia tissue and a risk of sellar floor infection, which is not conducive to the patient's postoperative recovery. In short, due to the lack of specialized instruments, the existing sellar floor repair methods have a cumbersome operation procedure, a long operation time, and are prone to accidental contact with the mucosa, surrounding blood vessels, or nerves during the adjustment of the fascia, increasing the risk of secondary trauma.

[0005] Therefore, how to design a fascia placement device for pituitary tumor resection surgery that can simplify surgical procedures and improve surgical efficiency is a technical problem that has not yet been solved in the existing technology. Summary of the Invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the technical defects in the prior art, where the fascia tissue is prone to wrinkling and stacking during the repair of the sella turcica due to the lack of special instruments, resulting in a complicated unfolding operation and prolonged operation time. The present invention provides a fascia placement device for pituitary tumor resection surgery that can simplify the operation and improve the efficiency of the operation.

[0007] Therefore, the present invention provides a fascia placement device for pituitary tumor resection surgery, comprising: a main tube, hollow and open at both ends, with an installation end formed at the first end; a plurality of pairs of first limiting through holes penetrating the side wall near the first end; an installation plate, fixedly installed on the installation end, suitable for fitting fascia; a movable rod, movably inserted inside the main tube, the first end of the movable rod being fixedly installed with a plurality of support coils, one of the support coils passing through a pair of first limiting through holes, and the support coil being elastically deformable; when the movable rod... When the moving rod moves back and forth inside the main tube, it can drive the support wire ring to extend or retract from the first limiting through hole; the movable sleeve is axially movable and sleeved on the outside of the main tube, with a limiting ring integrally connected to its first end. The limiting ring is set at a certain distance from the first end of the movable sleeve, and the inner diameter of the limiting ring is greater than or equal to the outer diameter of the mounting plate; when the main tube and the movable sleeve move relative to each other, and the mounting plate enters the limiting ring, the gap between the mounting plate and the limiting ring is suitable for compressing and fixing the fascia.

[0008] As a preferred embodiment, a plurality of arc-shaped mounting protrusions are uniformly formed circumferentially on the end face of the mounting plate on the side away from the main tube, and an anti-sticking opening is formed between two adjacent arc-shaped mounting protrusions.

[0009] As a preferred embodiment, the mounting plate is fixedly mounted on the mounting end via a mounting structure; the mounting structure includes: a threaded through hole extending through the mounting end; a mounting through hole extending through the mounting plate at a position opposite to the threaded through hole; and a mounting bolt passing through the mounting through hole and screwed into the threaded through hole, thereby fixing the mounting plate to the mounting end.

[0010] As a preferred embodiment, the two free ends of a support wire pass through a pair of first limiting through holes and are fixed to the head end of the movable rod, thereby forming the support wire loop.

[0011] As a preferred embodiment, the support coil is fixedly installed at the head end of the movable rod by a fixing structure; the fixing structure includes: a fixing head, which is fixedly pressed onto the two free ends of the support coil, so that the support coil forms a closed structure; and a fixing hole, which is formed at the head end of the movable rod; the fixing head can be matched and adhered to the inside of the fixing hole.

[0012] As a preferred embodiment, an annular mounting groove is provided on the outer side wall near the head end of the movable rod; it also includes a damping ring, which is sleeved and installed in the annular mounting groove and makes damping contact with the inner side wall of the main tube.

[0013] As a preferred embodiment, the system further includes a first operating handle, which is fitted onto the tail end of the movable rod via a handle mounting structure. The handle mounting structure includes: a first handle mounting through hole, formed at the tail end of the movable rod; a second handle mounting through hole, formed on the first operating handle; and a handle mounting shaft, passing through the first handle mounting through hole and the second handle mounting through hole, thereby fitting the first operating handle onto the tail end of the movable rod.

[0014] As a preferred embodiment, it also includes a strip-shaped connecting plate, one end of which is formed on the limiting ring and the other end of which is formed at the beginning of the movable sleeve, so that the limiting ring and the beginning of the movable sleeve are separated by a certain distance.

[0015] As a preferred embodiment, the movable sleeve is axially movable and sleeved on the main body tube via an axially movable structure; the axially movable structure includes: a rotating sleeve, rotatably sleeved on the main body tube, with its first end screwed to the tail end of the movable sleeve; a second operating handle, sleeved on the movable rod, with its first end rotatably connected to the tail end of the rotating sleeve, and its tail end contacting the first operating handle and being limited by the first operating handle on the movable rod; rotating the rotating sleeve can drive the movable sleeve to move back and forth axially.

[0016] As a preferred embodiment, the movable sleeve is restricted to moving only along its own axial direction by an axial limiting structure. The axial limiting structure includes: two guide grooves, axially opposite each other on the inner wall of the movable sleeve; and two guide blocks, fixedly mounted on the outer wall of the main tube opposite to the guide grooves. The guide blocks are matched and installed with the guide grooves and can move back and forth along the guide grooves. The rotating sleeve is restricted to rotating only circumferentially by a circumferential limiting structure. The circumferential limiting structure includes: an annular limiting groove at the beginning of the second operating handle; two second limiting through holes, opposite each other at the end of the rotating sleeve, with internal threads at one open end; and two limiting bolts, passing through the second limiting through holes and the annular limiting groove, and screwed to the threaded end of the second limiting through hole, thereby restricting the rotating sleeve to rotating only circumferentially.

[0017] The technical solution provided by this invention has the following advantages: The present invention provides a fascia placement device for pituitary tumor resection surgery, comprising a main tube, a mounting plate, a movable rod, and a movable sleeve. The main tube is hollow and open at both ends, with a mounting end formed at the first end. Several pairs of first limiting through holes are formed through the side wall near the first end. The mounting plate is fixedly mounted on the mounting end and is suitable for fitting the fascia. The movable rod is movably inserted inside the main tube, and several support coils are fixedly mounted at the first end of the movable rod. Each support coil passes through a pair of first limiting through holes, and the support coils are elastically deformable. When the movable rod moves back and forth inside the main tube, it can drive the support coils to extend or retract from the first limiting through holes. The movable sleeve is axially movable and fitted onto the outside of the main tube. A limiting ring is integrally connected to the first end of the movable sleeve, and the limiting ring is spaced a certain distance from the first end of the movable sleeve. The inner diameter of the limiting ring is greater than or equal to the outer diameter of the mounting plate. When the main tube and the movable sleeve move relative to each other, and the mounting plate enters the limiting ring, the gap between the mounting plate and the limiting ring is suitable for compressing and fixing the fascia.

[0018] The initial state of the fascia placement device for pituitary tumor resection surgery of the present invention is as follows: the movable rod is inserted inside the main tube, the movable sleeve is sleeved outside the main tube, the support wire ring is retracted as much as possible inside the main tube, and the limiting ring is located in front of the mounting plate; when placing the fascia, the fascia is first placed on the mounting plate, and then the movable sleeve is moved downward. The movable sleeve drives the limiting ring to move downward and gradually sleeve it to the outside of the mounting plate, thereby squeezing and fixing the fascia between the limiting ring and the mounting plate; when placing the fascia to the sellar floor defect area, the mounting plate with the fascia is first inserted into the sellar floor, and the movable sleeve is moved downward to drive the limiting ring to detach downward from the mounting plate; after the movable rod is moved upward to drive the support wire ring to extend out of the main tube and expand the fascia, the bottom of the support wire ring is tightly attached to the inner side of the sellar floor, and then the movable rod is moved downward to drive the support wire ring to retract into the main tube to release the fascia, and finally the fascia is basically flattened and attached to the sellar floor defect area.

[0019] This invention relates to a fascia placement device for pituitary tumor resection surgery. This device can deliver the fascia almost flat into the sella turcica and quickly spread it without requiring manual unfolding by the surgeon, simplifying the spreading procedure, shortening the operation time, and reducing accidental contact with mucosa, surrounding blood vessels, or nerves, thus lowering the risk of secondary trauma. Furthermore, during fascia transport, this invention can contain most of the fascia within the device, reducing the contact area between the fascia and the nasal mucosa, thereby reducing the probability of fascia tissue contamination, lowering the risk of sella turcica infection, and facilitating postoperative recovery for the patient. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the prior art or specific embodiments of the present invention, the accompanying drawings used in the description of the prior art or specific embodiments are briefly introduced below.

[0021] Figure 1This is a schematic diagram of the overall structure of the fascia placement device for pituitary tumor resection surgery according to the present invention.

[0022] Figure 2 yes Figure 1 Enlarged structural diagram of part A.

[0023] Figure 3 yes Figure 2 A schematic diagram of the explosion structure.

[0024] Figure 4 yes Figure 1 A schematic diagram of the explosion structure.

[0025] Figure 5 yes Figure 4 Enlarged structural diagram of section B.

[0026] Figure 6 yes Figure 4 A schematic diagram of the exploded structure of section C.

[0027] Figure 7 yes Figure 4 A schematic diagram of the exploded structure of section D.

[0028] Figure 8 yes Figure 4 Enlarged structural diagram of section E in the middle.

[0029] Figure 9 yes Figure 4 Enlarged structural diagram of section F in the middle.

[0030] Figure 10 yes Figure 9 A sectional view of section G.

[0031] Figure 11 This is a schematic diagram of the initial state of the device.

[0032] Figure 12 This is a schematic diagram showing the state of the device after the fascia tissue has been installed.

[0033] Figure 13 This is a diagram showing the location of the pituitary gland in the human body.

[0034] Figure 14 This is a schematic diagram of the removal of a portion of the sella floor during transsphenoidal pituitary tumor resection.

[0035] Figure 15 This is a schematic diagram of the saddle bottom defect area.

[0036] Figure 16 This is a schematic diagram showing the unfolding of folded fascia tissue.

[0037] Figure 17 This is a schematic diagram showing the adjustment of the fascia tissue covering position.

[0038] Figure 18 This is a schematic diagram of the constraint ring at the head of an existing snare.

[0039] Reference numerals: 1. Main tube; 11. Mounting plate; 111. Arc-shaped mounting protrusion; 112. Anti-stick opening; 12. First limiting through hole; 13. Mounting end; 131. Threaded through hole; 132. Mounting through hole; 133. Mounting bolt; 2. Movable rod; 21. Support threaded ring; 211. Fixed pressure head; 212. Fixed hole; 22. Annular mounting groove; 23. Damping ring; 3. Movable sleeve; 31. Limiting ring; 311. Strip-shaped connecting plate; 4. Rotating sleeve; 41. Guide groove; 42. Guide block; 51. Annular limiting groove; 52. Second limiting through hole; 53. Limiting bolt; 6. First operating handle; 7. Second operating handle; 81. First handle mounting through hole; 82. Second handle mounting through hole; 83. Handle mounting shaft. Detailed Implementation

[0040] To enable those skilled in the art to better understand this solution, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0041] It should be noted that the terms "first," "second," etc., in the claims and specification of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such as a process, method, system, product, or device that includes a series of steps or units, not limited to those steps or units explicitly listed, but may also include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0042] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the term "multiple" should mean two or more. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0043] The present application will now be described in detail with reference to the accompanying drawings and embodiments. Example

[0044] This embodiment provides a fascia placement device for pituitary tumor resection surgery, such as... Figure 1-2 As shown, it includes a main tube 1, a mounting plate 11, a movable rod 2, and a movable sleeve 3; wherein the main tube 1 is hollow and open at both ends, with a mounting end 13 formed at the first end; several pairs of first limiting through holes 12 are formed through the side wall near the first end; the mounting plate 11 is fixedly installed on the mounting end 13, suitable for fitting fascia; the movable rod 2 is movably inserted inside the main tube 1, and several support coils 21 are fixedly installed at the first end of the movable rod 2, one of the support coils 21 passing through a pair of first limiting through holes 12, and the support coil 21 can elastically deform; when the movable rod 2 is in When the main tube 1 moves back and forth inside, it can drive the support wire ring 21 to extend or retract from the first limiting through hole 12; the movable sleeve 3 is axially movable and sleeved on the outside of the main tube 1, and the first end is integrally connected to the limiting ring 31. The limiting ring 31 is set at a certain distance from the first end of the movable sleeve 3, and the inner diameter of the limiting ring 31 is greater than or equal to the outer diameter of the mounting plate 11; when the main tube 1 and the movable sleeve 3 move relative to each other, and the mounting plate 11 enters the limiting ring 31, the gap between the mounting plate 11 and the limiting ring 31 is suitable for squeezing and fixing the fascia.

[0045] In this embodiment, the initial state of the fascia placement device for pituitary tumor resection surgery is as follows: the movable rod 2 is inserted inside the main tube 1, the movable sleeve 3 is sleeved outside the main tube 1, the support wire ring 21 is retracted as much as possible inside the main tube 1, and the limiting ring 31 is located in front of the mounting plate 11 (e.g., Figure 11(As shown); When installing the fascia, first place the fascia on the mounting plate 11, then move the movable sleeve 3 downwards. The movable sleeve 3 drives the limiting ring 31 downwards and gradually fits onto the outside of the mounting plate 11, thereby squeezing and fixing the fascia between the limiting ring 31 and the mounting plate 11 (as shown). Figure 12 (As shown); When placing the fascia into the saddle floor defect area, first insert the mounting plate 11 with the fascia installed into the saddle floor, then move the movable sleeve 3 downwards to drive the limiting ring 31 downwards to disengage from the mounting plate 11; move the movable rod 2 upwards to drive the support coil 21 to extend out of the main tube 1 and expand the fascia (as shown). Figure 2 As shown, the bottom of the support wire ring 21 is tightly attached to the inner side of the saddle bottom, and then the movable rod 2 is moved downward to drive the support wire ring 21 back into the main tube 1 to release the fascia, and finally the fascia is basically flattened and attached to the defective area of ​​the saddle bottom.

[0046] This embodiment of the fascia placement device for pituitary tumor resection surgery can deliver the fascia almost flat into the sella turcica and quickly spread it without the need for manual unfolding by the doctor, simplifying the spreading procedure, shortening the operation time, and reducing accidental contact with mucosa, surrounding blood vessels or nerves, thus reducing the risk of secondary trauma. In addition, when transporting the fascia, this embodiment can store most of the fascia inside the device, reducing the contact area between the fascia and the nasal mucosa, thereby reducing the probability of fascia tissue contamination, reducing the risk of sella turcica infection, and benefiting the patient's postoperative recovery.

[0047] It should be noted that when the support wire ring 21 is retracted, because the contact area between the fascia and the inner side of the saddle bottom is large, the friction and adsorption between the two are sufficient to offset the pulling that may occur when the support wire ring 21 is retracted. Therefore, the fascia will not be pulled back by the support wire ring 21 and can be stably attached to the defective area of ​​the saddle bottom.

[0048] like Figure 4-5 As shown, on the end face of the mounting plate 11 away from the main tube 1, a plurality of arc-shaped mounting protrusions 111 are uniformly formed circumferentially, and an anti-sticking opening 112 is formed between two adjacent arc-shaped mounting protrusions 111. The arc-shaped mounting protrusions 111 can reduce the contact area between the mounting plate 11 and the fascia, and the anti-sticking opening 112 can further reduce the contact area between the arc-shaped mounting protrusions 111 and the fascia, which is conducive to the smooth detachment of the fascia from the mounting plate 11. In addition, the anti-sticking opening 112 can also prevent the formation of a closed space between the inner side of the arc-shaped mounting protrusions 111 and the fascia, preventing the fascia from accidentally adhering to the mounting plate 11 when detaching.

[0049] like Figure 3As shown, the mounting plate 11 is fixedly mounted on the mounting end 13 by a mounting structure; the mounting structure includes a threaded through hole 131, a mounting through hole 132, and a mounting bolt 133; wherein the threaded through hole 131 is formed through the mounting end 13; the mounting through hole 132 is formed through the mounting plate 11 at a position opposite to the threaded through hole 131; after the mounting bolt 133 passes through the mounting through hole 132, it is screwed into the threaded through hole 131, thereby fixing the mounting plate 11 on the mounting end 13.

[0050] In this embodiment, the support coil 21 is formed by passing the two free ends of a support wire through a pair of first limiting through holes 12 and fixing them to the head end of the movable rod 2, thereby forming the support coil 21.

[0051] like Figure 6 As shown, the support coil 21 is fixedly installed at the head end of the movable rod 2 by a fixing structure; the fixing structure includes a fixing head 211 and a fixing hole 212; wherein the fixing head 211 is fixedly pressed onto the two free ends of the support coil 21, so that the support coil 21 forms a closed structure; the fixing hole 212 is opened at the head end of the movable rod 2; the fixing head 211 can be matched and bonded inside the fixing hole 212. During installation, the two free ends of the support coil 21 are respectively inserted into the inner cavity of the main tube 1 through the two first limiting through holes 12, and then the two free ends are pressed onto the fixing head 211. Then, the fixing head 211 is matched and bonded inside the fixing hole 212, thereby completing the fixed installation of the support coil 21; after the remaining support coils 21 are installed, the mounting bolt 133 is screwed into the threaded through hole 132 and the threaded through hole 131, thereby fixing the mounting plate 11 onto the mounting end 13.

[0052] It should be noted that fascia, as an autologous transplanted tissue, possesses a certain degree of toughness and tensile strength, making it less prone to damage; secondly, the structure of the supporting wire loop 21 is similar to the constraint loop at the head end of existing snare devices (such as...). Figure 18 As shown in the figure), the snare is a mature medical device for ligating blood vessels, polyps or tubular structures. The structure and material of its restraint ring have both toughness and strength. Correspondingly, the supporting force of the support wire ring 21 of this device is similar to that of the snare, which can both fully stretch the fascia and avoid tearing the fascia.

[0053] The movable rod 2 has an annular mounting groove 22 on its outer side wall near the first end; it also includes a damping ring 23, which is fitted inside the annular mounting groove 22 and makes damping contact with the inner side wall of the main tube 1. The damping ring 23 increases the friction between the movable rod 2 and the inner side wall of the main tube 1, preventing the movable rod 2 from moving unexpectedly when subjected to slight external forces, thereby increasing the stability and controllability of the movement of the movable rod 2.

[0054] like Figure 7 As shown, it also includes a first operating handle 6, which is sleeved on the tail end of the movable rod 2 via a handle mounting structure. The handle mounting structure includes a first handle mounting through hole 81, a second handle mounting through hole 82, and a handle mounting shaft 83. The first handle mounting through hole 81 is formed at the tail end of the movable rod 2. The second handle mounting through hole 82 is formed on the first operating handle 6. The handle mounting shaft 83 passes through the first handle mounting through hole 81 and the second handle mounting through hole 82, thereby sleeved on the tail end of the movable rod 2.

[0055] like Figure 8 As shown, it also includes a strip-shaped connecting plate 311, one end of which is formed on the limiting ring 31 and the other end is formed on the head end of the movable sleeve 3, so that the limiting ring 31 and the head end of the movable sleeve 3 are separated by a certain distance.

[0056] like Figure 9-10 As shown, the movable sleeve 3 is axially movable and sleeved on the main body tube 1 via an axial moving structure; the axial moving structure includes a rotating sleeve 4 and a second operating handle 7; wherein the rotating sleeve 4 is rotatably sleeved on the main body tube 1, and its first end is screwed to the tail end of the movable sleeve 3; the second operating handle 7 is sleeved on the movable rod 2, its first end is rotatably connected to the tail end of the rotating sleeve 4, and its tail end contacts the first operating handle 6 and is limited on the movable rod 2 by the first operating handle 6; rotating the rotating sleeve 4 can drive the movable sleeve 3 to move back and forth axially.

[0057] The movable sleeve 3 is restricted to moving only along its own axial direction by an axial limiting structure. The axial limiting structure includes guide grooves 41 and guide blocks 42. Two guide grooves 41 are formed axially opposite each other on the inner wall of the movable sleeve 3. Two guide blocks 42 are fixedly disposed on the outer wall of the main tube 1 opposite to the guide grooves 41. The guide blocks 42 are matched and installed with the guide grooves 41 and can move back and forth along the guide grooves 41. The rotating sleeve 4 is restricted to rotating only circumferentially by a circumferential limiting structure. One end of the guide groove 41 extends to the end face of the tail end of the movable sleeve 3 and forms an installation opening through which the guide blocks 42 can be installed within the guide groove 41.

[0058] The circumferential limiting structure includes an annular limiting groove 51, a second limiting through hole 52, and limiting bolts 53. The annular limiting groove 51 is located at the beginning of the second operating handle 7. Two second limiting through holes 52 are located opposite each other at the end of the rotating sleeve 4, with internal threads at one open end. Two limiting bolts 53 pass through the second limiting through hole 52 and the annular limiting groove 51, and are screwed to the threaded end of the second limiting through hole 52, thereby restricting the rotating sleeve 4 to only circumferential rotation. The rotating sleeve 4 is restricted by the limiting bolts 53 to only rotate circumferentially along the annular limiting groove 51, while the movable sleeve 3 is restricted by the guide groove 41 and the guide block 42 to only move axially. Based on this, the threaded connection between the two can convert the circumferential rotation of the rotating sleeve 4 into the axial movement of the movable sleeve 3, thereby ensuring that the movable sleeve 3 can move smoothly axially, and thus achieving precise adjustment of the limiting ring 31.

[0059] The fascia placement device for pituitary tumor resection surgery in this embodiment is used as follows: The initial state of this embodiment is as follows: the movable rod 2 is inserted inside the main tube 1, the movable sleeve 3 is fitted outside the main tube 1, the support coil 21 is retracted as much as possible inside the main tube 1, and the limiting ring 31 is located in front of the mounting plate 11; when fitting the fascia, first fit the fascia onto the mounting plate 11, then rotate the sleeve 4 to move the movable sleeve 3 downward, causing the limiting ring 31 to move downward and gradually fit onto the outside of the mounting plate 11, thereby squeezing and fixing the fascia between the limiting ring 31 and the mounting plate 11; when placing the fascia into the saddle bottom defect area, insert the mounting plate 11 with the fascia installed into... The device is moved to the inside of the saddle bottom, and the movable sleeve 3 is moved downward by rotating the sleeve 4, which drives the limiting ring 31 to disengage downward from the mounting plate 11. The first operating handle 6 is pushed, which drives the movable rod 2 to move upward, thereby driving the support wire ring 21 to extend out of the main tube 1 and expand the fascia. Then the entire device is pulled out slightly until the bottom of the support wire ring 21 is attached to the inside of the saddle bottom, so that the fascia is in close contact with the inside of the saddle bottom. Then the movable rod 2 is moved downward to drive the support wire ring 21 to retract into the inside of the main tube 1 to release the fascia, and finally the fascia is basically flattened and attached to the defective area of ​​the saddle bottom.

[0060] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this innovative technical solution.

Claims

1. A fascia placement device for pituitary tumor resection surgery, characterized by, The utility model relates to a kind of muscle fascia fixing device, including: Main body pipe (1), hollow and both ends open arrangement, first end is shaped with installation end (13);Several pairs of first limiting through-hole (12) are opened on the side wall close to first end; Mounting disc (11), fixedly installed on the installation end (13), suitable for muscle fascia is set; Movable rod (2), movably threaded in the main body pipe (1) inside, the movable rod (2) first end is fixedly installed with several support coil (21), one first limiting through-hole (12) is threaded in one support coil (21), and the support coil (21) can be elastically deformed;When the movable rod (2) is moved back and forth in the main body pipe (1) inside, the support coil (21) can be driven to stretch out or retract from the first limiting through-hole (12); Movable sleeve (3), axially movably set on the outside of the main body pipe (1), first end is integrally connected with limiting ring (31), the limiting ring (31) is arranged at a certain distance from the first end of the movable sleeve (3), and the inner diameter of the limiting ring (31) is greater than or equal to the outer diameter of the mounting disc (11);When the main body pipe (1) and the movable sleeve (3) are relatively moved, the mounting disc (11) enters the limiting ring (31), the gap between the mounting disc (11) and the limiting ring (31) is suitable for extruding fixed muscle fascia.

2. The fascia placement device for pituitary tumor resection surgery of claim 1, wherein: On the end face of the mounting disc (11) away from the main body pipe (1), several arc-shaped mounting lugs (111) are uniformly formed along the circumference, and an anti-sticking opening (112) is formed between two adjacent arc-shaped mounting lugs (111).

3. The fascia placement device for pituitary tumor resection surgery of claim 2, wherein: The mounting disc (11) is fixedly installed on the installation end (13) by a mounting structure. The mounting structure includes: A threaded through-hole (131) is opened through the installation end (13); A mounting through-hole (132) is opened through the mounting disc (11) at a position opposite to the threaded through-hole (131); A mounting bolt (133) is threaded through the mounting through-hole (132) and screwed with the threaded through-hole (131), so as to fixedly install the mounting disc (11) on the installation end (13).

4. The fascia placement device for pituitary tumor resection surgery of claim 1, wherein: Two free ends of a support wire are threaded through a pair of first limiting through-holes (12) respectively, and then fixed with the first end of the movable rod (2), so as to form the support coil (21).

5. The fascia placement device for pituitary tumor resection surgery of claim 4, wherein: The support coil (21) is fixedly installed on the first end of the movable rod (2) by a fixing structure; the fixing structure includes: A fixed pressure head (211) is crimped on the two free ends of the support coil (21), so that the support coil (21) forms a closed structure; A fixed hole (212) is opened in the first end of the movable rod (2); the fixed pressure head (211) can be matched and bonded in the fixed hole (212).

6. The fascia placement device for pituitary tumor resection surgery of claim 5, wherein: An annular mounting groove (22) is opened on the outer side wall close to the first end of the movable rod (2); Further including a damping ring (23), the damping ring (23) is installed in the annular mounting groove (22), and is in damping contact with the inner side wall of the main body pipe (1).

7. The fascia placement device for pituitary tumor resection surgery of claim 6, wherein: Further comprising a first operating handle (6) which is sleevedly mounted on the tail end of the movable rod (2) through a handle mounting structure; The handle mounting structure comprises: A first handle mounting through hole (81) which is opened on the tail end of the movable rod (2); A second handle mounting through hole (82) which is opened on the first operating handle (6); A handle mounting shaft (83) which is penetrated in the first handle mounting through hole (81) and the second handle mounting through hole (82) so as to sleevedly mount the first operating handle (6) on the tail end of the movable rod (2).

8. The fascia placement device for pituitary tumor resection surgery of claim 1, wherein: Further comprising a strip-shaped connecting plate (311) which is shaped on one end of the limiting ring (31) and on the other end of the head end of the movable sleeve (3) so that the limiting ring (31) is separated from the head end of the movable sleeve (3) by a certain distance.

9. The fascia placement device for pituitary tumor resection surgery of claim 7, wherein: The movable sleeve (3) is axially movably sleeved on the main body tube (1) through an axial movement structure; The axial movement structure comprises: A rotating sleeve (4) which is rotatably sleeved on the main body tube (1) and is screwed on the tail end of the movable sleeve (3) on the head end; A second operating handle (7) which is sleeved on the movable rod (2), rotatably connected with the tail end of the rotating sleeve (4) on the head end, and in contact with the first operating handle (6) on the tail end, and is limited by the first operating handle (6) on the movable rod (2); Rotating the rotating sleeve (4) can drive the movable sleeve (3) to move back and forth along the axis.

10. The fascia placement device for pituitary tumor resection surgery of claim 9, wherein: The movable sleeve (3) is limited to move back and forth along the axis only through an axial limiting structure; The axial limiting structure comprises: Two guide grooves (41) which are oppositely opened on the inner side wall of the movable sleeve (3) along the axis; Two guide blocks (42) which are fixedly arranged on the outer side wall of the main body tube (1) opposite to the guide grooves (41); the guide blocks (42) are matchedly mounted with the guide grooves (41) and can move back and forth along the guide grooves (41); The rotating sleeve (4) is limited to rotate circumferentially only through a circumferential limiting structure; The circumferential limiting structure comprises: An annular limiting groove (51) which is opened on the head end of the second operating handle (7); Two second limiting through holes (52) which are oppositely opened on the tail end of the rotating sleeve (4) and are provided with internal threads on the opening position of one end; Two limiting bolts (53) which are penetrated through the second limiting through holes (52) and the annular limiting groove (51) and are screwed on the end of the second limiting through hole (52) provided with internal threads so as to limit the rotating sleeve (4) to rotate circumferentially only.

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