Puncture instrument for spinal navigation surgery

Abstract

A puncture instrument for spinal navigation surgery comprises a puncture needle and a puncture cannula. The operation component comprises a reference frame setting part, the operation component and the puncture needle are connected integrally or in a combined mode, the operation component and the puncture cannula are connected in a combined mode, the puncture cannula is combined on the operation component when used and separated from the operation component after being used, the position relation of the operation component and the puncture needle is locked when used, and the operation component and the puncture needle retreat from the puncture cannula after being used. The puncture cannula is provided with a second threaded combination head which is combined with a second combination channel with a threaded hole in the operation component. Through the arrangement, the position relation between the reference frame arranged on the operation part and the operation part and the position relation between the reference frame arranged on the operation part and the puncture needle are all in a locked state, the reference frame and the puncture needle are ensured to simultaneously advance and retreat, and the puncture cannula and the operation part are effectively combined and separated before and after use; the influence and interference on the puncture cannula due to the arrangement of the reference frame can be avoided, so that the whole surgical navigation tracking operation is smoother and simpler.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical instruments, and in particular to the field of spinal surgery navigation instruments, and specifically is a puncture instrument for spinal navigation surgery. Background Art

[0002] Percutaneous vertebroplasty usually requires the use of a special combination of a cannula and a puncture needle. The puncture needle extends from the tip of the cannula, and the puncture force of the puncture needle is used to percutaneously insert the puncture needle and the cannula into the vertebral body at a specific angle. Autologous bone or bone cement is then implanted to complete the cone reconstruction.

[0003] However, because it is a percutaneous surgery to the vertebral body, it needs to pass through multiple groups of nerves. Once the position is deviated, it will cause irreversible effects on the patient. Therefore, in order to ensure the surgical angle, a guide is usually set in advance to guide the entry direction and position of the puncture needle. However, human skin is soft, and there is still a risk of deviation of the puncture position and angle due to skin movement during the use of the guide.

[0004] With the development of surgical navigation technology, effective preoperative path planning and real-time tracking during surgery allow doctors to understand the puncture direction and penetration depth in real time with the help of the display structure of the surgical navigation system. However, the problem is that there are many types of puncture instruments in the prior art, and the position where the puncture needle and the end of the cannula are combined is set relatively large for ease of operation. As a result, when using existing puncture instruments to complete navigation surgery, the reference frame for navigation needs to be set to the outside of the cannula end. The clamping method is unstable and prone to imbalance of the center of gravity. The reference frame needs to be kept balanced at all times during operation. When combined to other positions, it is difficult to adapt the same reference frame clamping structure due to the wide variety of puncture instruments.

[0005] In view of the above technical problems, the present invention provides a puncture instrument for spinal navigation surgery. Summary of the invention

[0006] The present invention aims at the above technical problems and hopes to provide a puncture instrument specially used for surgical navigation. The existing clamping structure with a reference frame is mostly clamped to the outside of the cannula in order to maintain stability. This method requires a special step of removing the reference frame from the cannula before and after navigation, which increases the complexity of the entire operation and also requires the balance of the reference frame to be maintained during the process. If a special puncture instrument is provided, this problem needs to be avoided. A reference frame structure that is withdrawn together with the puncture needle is provided to ensure the effective separation of the puncture cannula and the puncture needle. In this way, it can be ensured that it can be tracked by the surgical navigation system during the puncture process. After the puncture is successful, the puncture needle and the navigation reference frame are quickly withdrawn at the same time, leaving only the cannula for implanting bone cement or other substances.

[0007] The invention discloses a puncture instrument for spinal navigation surgery, which comprises

[0008] puncture needle;

[0009] Puncture cannula;

[0010] The operating component includes a reference frame setting part. The operating component is connected to the puncture needle in an integral or combined manner. The operating component is connected to the puncture cannula in combination. The puncture cannula is combined on the operating component when in use and is separated from the operating component after use. The position relationship between the operating component and the puncture needle is locked when in use, and the operating component is withdrawn from the puncture cannula at the same time after use.

[0011] This arrangement ensures that the positional relationship between the reference frame set on the operating component and the operating component and the puncture needle are all in a locked state, ensuring that the reference frame and the puncture needle move forward and backward together, and using the effective combination and separation of the front and rear puncture cannulas and the operating component, it can avoid the influence and interference of the reference frame on the puncture cannula, making the entire surgical navigation tracking operation smoother and simpler.

[0012] The following is an implementation scheme of an operation component and a puncture needle being integrally connected, specifically including:

[0013] The puncture cannula has a second combined head at the tail end; an operating component, which includes

[0014] The combination part has a combination channel 2 for combination with the puncture sleeve; the combination channel 2 is consistent with the central axis of the combination part as a whole, and the combination part 2 is arranged at the second end of the operation part as a whole; wherein the first end of the operation part is the end away from the tip of the puncture needle when combined, and the second end is the end close to the tip of the puncture needle;

[0015] An operating rod, the operating rod is extended from the outer side wall of the combination part in two directions of a straight line, and a reference frame setting part is set on the operating rod in one extending direction, which is used to set a reference frame recognized by the navigation system;

[0016] The puncture needle is integrally connected to the operating component, and the puncture needle passes through the combined channel 2; the combined head 2 of the puncture sleeve is arranged in the combined channel 2, and in the absence of external force, the puncture sleeve is stably sleeved on the outside of the puncture needle.

[0017] The following is an embodiment of the combined connection between the operating component and the puncture needle, which specifically includes:

[0018] The puncture needle has a first combined head at the tail end; the puncture cannula has a second combined head at the tail end; the operating part includes

[0019] The combination part 1 has a combination channel 1 for combining with the puncture needle, and also includes a locking structure for locking the positional relationship between the combination part 1 and the puncture needle 1;

[0020] The second combination part has a second combination channel for combining with the puncture sleeve; the combination channel 1 and the combination channel 2 have the same central axis, the combination part 1 is connected to the combination part 2, and the combination part 1 is arranged at the first end of the entire operating component, and the combination part 2 is arranged at the second end of the entire operating component, and the combination part 1 and the combination part 2 are connected to form a combination part;

[0021] An operating rod, the operating rod is extended outwardly from the outer side wall of the combination part in two directions of a straight line, and a reference frame setting part is set on the operating rod in one extending direction, for setting a reference frame recognized by the navigation system;

[0022] The combination head 1 of the puncture needle is set in the combination channel 1, and the position and angle of the puncture needle in the combination part 1 are locked by the locking structure; the combination head 2 of the puncture sleeve is set in the combination channel 2, and in the absence of external force, the puncture sleeve is stably connected to the outside of the puncture needle.

[0023] Furthermore, the operating rod extends in two directions perpendicular to the outer side wall of the combined part. This arrangement facilitates force application and rotation operations during puncture.

[0024] Furthermore, the operating rod and the combined parts are made of hard light alloy material. This arrangement can ensure the structural stability after the various structures are set up, and can also avoid the unstable center of gravity during operation due to the excessive weight of the entire device, which may cause damage to the generated operating path.

[0025] Furthermore, the operating rod is arranged in the middle of the combined part, and a soft rubber block is wrapped around the outside of the operating rod and the combined part, and both ends of the soft rubber block are arc-shaped structures to ensure the comfort of holding and operation.

[0026] Furthermore, the combination head 2 is a combination head with a threaded section, and the combination channel 2 is a threaded hole adapted to the threaded section; in this way, the combination head 2 and the combination channel 2 can be combined and separated by rotating in different directions, ensuring that they can move forward with the puncture needle and the operating component when in use, and when separation is required, just separate the combination head 2 from the combination channel 2. In addition, the threaded section is provided with a Luer connector connected to a general syringe, ensuring that it can be connected to a suitable injection device when bone cement is implanted.

[0027] Furthermore, combination head 1 is a non-circular head, and combination channel 1 is a non-circular hole adapted thereto. The non-circular hole setting can ensure that when the combination is rotated into the surgical position with force applied, there will be no tracking error problem caused by the rotational force in front causing the puncture needle to rotate.

[0028] Furthermore, after passing through the combination channel 2, the combination head 1 enters the combination channel 1 to complete the combination. This arrangement ensures that the puncture sleeve and the puncture needle are combined from below through the combination channel 2, leaving space for the locking structure to be set.

[0029] Furthermore, the locking structure includes: a threaded locking hole on the combination head one, a threaded locking nail, and a locking plate on the combination part, a through hole for the threaded locking nail to pass through is arranged on the locking plate, a nail cap is arranged on the threaded locking nail, and the outer diameter of the nail cap is larger than the outer diameter of the through hole; when in use, the combination head one is first passed through the combination channel two and then enters the combination channel one to complete the first step of combination, and then the locking nail is passed through the through hole, and then combined with the threaded locking nail through the threaded locking nail hole, and the positional relationship between the combination head one and the combination channel one is locked by continuously rotating the threaded locking nail until the nail cap is in close contact with the locking plate.

[0030] The invention also discloses a puncture needle matched with a puncture instrument, which comprises a combination head one and a needle body part. The cross section of the combination head one is non-circular. A threaded locking hole is arranged in the combination head one.

[0031] The invention also discloses a puncture sleeve matched with the puncture instrument, which comprises a second combination head and a tube body part, wherein the second combination head is a threaded combination hole.

[0032] The present invention also discloses a puncture instrument supporting operating component, which includes

[0033] The combination part 1 has a combination channel 1 for combining with the puncture needle, and also includes a locking structure for locking the positional relationship between the combination part 1 and the puncture needle 1;

[0034] The second combination part has a second combination channel for combining with the puncture sleeve; the combination channel 1 and the combination channel 2 have the same central axis, the combination part 1 is connected with the combination part 2, and the combination part 1 is arranged at the first end of the entire operating component, and the combination part 2 is arranged at the second end of the entire component operating component, and the combination part 1 and the combination part 2 are connected to form a combination part;

[0035] An operating rod is extended outward from the outer side wall of the combined part in two directions of a straight line, and a reference frame setting part is set on the operating rod in one extending direction for setting a reference frame recognized by the navigation system.

[0036] Technical Effects

[0037] The positional relationship between the reference frame and the puncture needle is locked, so that the reference frame can be guided by the navigation system to deliver the puncture cannula and the puncture needle to the surgical site under visual conditions. After the operation, the reference frame is removed with the puncture needle. The puncture cannula is assembled before use and separated after use, and the reference frame will not interfere with it. The entire operation process does not require special attention to the setting and placement of the reference frame. In addition, because of the positional locking relationship between the puncture needle and the operating component during use, the operator holds the operating component to operate the entire process, and there is no need to worry about problems caused by unstable center of gravity. The reference frame moves with the puncture needle, and the reference sleeve will be stably set in the appropriate position after implantation without interference from other structures.

[0038] By setting the puncture needle and the operating component in a combined locking manner, the effect of using the puncture needle for different patients can be achieved by simply replacing the puncture needle and the puncture cannula according to different patients. In addition, even if the puncture needle is not disposable, the needle tip will wear during use, and thus cannot meet the purpose of quick and effective entry. Therefore, the problem of replacing the puncture needle after wear can be solved by combining replaceable methods.

[0039] By setting the combination head 1 and the combination channel 1 to be non-circular structures respectively, and arranging a locking pin on the top, the combination head 1 can be locked in the combination channel very well without any up and down movement or relative rotation. The combination head 2 also abuts against the combination head 1 to achieve the best position locking effect, thereby fixing the positional relationship between the reference frame and the puncture needle tip, thereby ensuring to the greatest extent that the surgical navigation system completes the tracking of the puncture needle by tracking the reference frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A schematic diagram of the structure of the puncture instrument provided with an upper reference frame according to the present invention;

[0041] Figure 2 It is a schematic diagram of the structure of the puncture instrument of the present invention without a reference frame;

[0042] Figure 3 This is a schematic diagram of the longitudinal cross-sectional structure of the operating component after the puncture instrument is assembled in an embodiment of the present invention in which the puncture needle and the operating component are integrally connected;

[0043] Figure 4 This is a schematic diagram of the longitudinal cross-sectional structure of the operating component position after the puncture instrument is assembled according to an embodiment of the combination of the puncture needle and the operating component of the present invention;

[0044] Figure 5 This is a schematic diagram of the operating component structure of an embodiment of the combination of a puncture needle and an operating component of the present invention, in which a soft rubber block is not provided but a reference frame is provided;

[0045] Figure 6 This is a schematic diagram of the longitudinal cross-sectional structure of the operating component of the embodiment of the combination of the puncture needle and the operating component of the present invention, in which neither the soft rubber block nor the reference frame is provided;

[0046] Figure 7 It is a schematic diagram of a transverse cross-sectional structure of a portion of a combined channel of an embodiment of a combination of a puncture needle and an operating component of the present invention;

[0047] Figure 8 This is a schematic diagram of the sleeve connection structure of the puncture needle and the puncture cannula in the embodiment of the combination of the puncture needle and the operating component of the present invention;

[0048] Fig. 9 This is a schematic diagram of the puncture cannula structure of the present invention;

[0049] Fig.10 This is a schematic diagram of the puncture needle structure of an embodiment of the combination of the puncture needle and the operating component of the present invention;

[0050] Fig.11 This is a schematic diagram of the structure of the soft rubber block of the present invention;

[0051] Description of main reference numerals

[0052] 1. Puncture needle; 11. Combination head one; 111. Arc segment; 112. Straight segment; 2. Puncture cannula; 21. Combination head two; 22. Oval operating structure; 3. Combination part; 31. Combination channel one; 32. Combination channel two; 4. Operating rod; 41. Reference frame setting part; 42. Soft rubber block; 51. Threaded locking hole; 52. Threaded locking nail; 521. Nail cap; 53. Locking plate; 531. Through hole; 54. Accommodating hole. DETAILED DESCRIPTION

[0053] Example 1

[0054] refer to Figure 1-3 , 9 and 11; A puncture instrument for spinal navigation surgery, comprising a puncture needle 1 and a puncture cannula 2; also comprising an operating component, including a reference frame setting part, the operating component is connected integrally or in combination with the puncture needle 1, the operating component is connected in combination with the puncture cannula 2, the puncture cannula 2 is combined on the operating component when in use, and is separated from the operating component after use, the operating component and the puncture needle 1 are locked in positional relationship when in use, and are withdrawn from the puncture cannula 2 at the same time after use. The operating component is integrally connected with the puncture needle 1, and the specific implementation method is that a combination head 21 is provided at the tail end of the puncture cannula 2; the operating component comprises a combination part 3, and a combination channel 2 32 for combining with the puncture cannula is provided in the combination part 3; the combination channel 2 32 is the same as the central axis of the combination part 3 as a whole, and the combination part 3 is arranged at the second end of the whole component operating component; wherein the first end of the operating component is the end away from the tip of the puncture needle 1 when combined, and the second end is the end close to the tip of the puncture needle 1.

[0055] An operating rod 4, the operating rod 4 is extended from the outer side wall of the combination part 3 in two directions of a straight line, and a reference frame setting part 41 is set on the operating rod 4 in one extending direction, for setting a reference frame recognized by the navigation system;

[0056] The puncture needle 1 is integrally connected to the operating component, and the puncture needle 1 passes through the combined channel 2 32; the combined head 21 of the puncture sleeve 2 is set in the combined channel 2 32, and in the absence of external force, the puncture sleeve 2 is stably sleeved on the outside of the puncture needle 1.

[0057] In a more preferred embodiment, the operating rod 4 extends in two directions perpendicular to the outer side wall of the combined part 3. This arrangement can facilitate force application and rotation operations during puncture.

[0058] In a more preferred embodiment, the operating rod 4 and the combined part 3 are both made of hard light alloy material. This arrangement can ensure the structural stability of each structure after it is set up, and can also avoid the unstable center of gravity during operation due to the excessive weight of the entire device, which may cause damage to the generated operating path.

[0059] In a more preferred embodiment, the operating rod 4 is arranged in the middle of the combined part 3, and a soft rubber block 42 is wrapped around the outside of the operating rod 4 and the combined part 3, and both ends of the soft rubber block 42 are arc-shaped structures to ensure the comfort of holding the operation.

[0060] In a more preferred embodiment, the soft rubber block 42 wraps the combination part 3 and the operating rod 4 inside, leaving a hole for allowing the puncture sleeve 2 to pass through and a hole for allowing the operating rod 4 on one side of the reference frame setting part 41 to extend out.

[0061] In a more preferred embodiment, the soft rubber block 42 is symmetrically arranged with the longitudinal axis of the combined part 3 as the symmetry axis, and the edges of the soft rubber block 42 are all rounded.

[0062] In a more preferred embodiment, the second combination head 21 is a combination head with a threaded section, and the second combination channel 32 is a threaded hole adapted to the threaded section; in this way, the purpose of combining and separating the second combination head 21 and the second combination channel 32 by rotating in different directions can be achieved, ensuring that they can move forward with the puncture needle 1 and the operating component when in use, and when separation is required, just separate the second combination head 21 from the second combination channel 32. In addition, the threaded section is provided with a Luer connector connected to a general syringe, ensuring that it can be connected to a suitable injection device when bone cement is implanted.

[0063] In a more preferred embodiment, an operating structure is provided on the puncture sleeve 2, which can be specifically an elliptical operating structure 22. The elliptical operating structure 22 is provided close to the combination head 21. This arrangement can very conveniently perform a rotation operation on the puncture sleeve 2, thereby realizing fast and effective combination during use and separation after use.

[0064] When in use, the reference frame is set to the reference frame setting part, and the combination head 21 and the combination channel 2 32 of the puncture cannula 2 are rotated and combined. Under the guidance of the navigation system, the hand holds the operating lever 4 to guide the puncture needle 1 into the appropriate position, and then the elliptical platform and the operating component are controlled to rotate relative to each other to separate the combination head 21 and the combination channel 2 32 of the puncture cannula 2. Then, the puncture needle 1 fixed together and the operating component with the reference frame are separated from the puncture cannula 2, leaving only the puncture cannula 2 in the puncture position for the subsequent implantation of bone cement and other substances. Later, the injection structure can be combined with the combination head 21 to complete the subsequent implantation of substances.

[0065] The reference frame and the puncture needle 1 are locked in position, so that the reference frame can be guided by the navigation system to deliver the puncture sleeve 2 and the puncture needle 1 to the surgical site under visual conditions, and then removed with the puncture needle 1 after the surgery. The entire operation process does not require special attention to the setting and placement of the reference frame. In addition, because of the position locking relationship between the puncture needle 1 and the operating component during use, the operator holds the operating component to operate the entire process, and there is no need to worry about problems caused by unstable center of gravity. The reference frame moves with the puncture needle 1, and the reference sleeve will be stably set in the appropriate position after implantation without interference from other structures.

[0066] Example 2

[0067] refer to Figure 1-2 ; 4-11; A puncture instrument for spinal navigation surgery, comprising a puncture needle 1 and a puncture cannula 2; also comprising an operating component, including a reference frame setting portion, the operating component and the puncture needle 1 are integrally or combinedly connected, the operating component and the puncture cannula 2 are combinedly connected, the puncture cannula 2 is combined on the operating component when in use, and is separated from the operating component after use, the operating component and the puncture needle 1 are locked in positional relationship when in use, and are withdrawn from the puncture cannula 2 at the same time after use.

[0068] refer to Figure 3-6, specifically an implementation scheme of combining an operating component with a puncture needle 1, a combination head 11 is provided at the tail end of the puncture needle 1; a combination head 21 is provided at the tail end of the puncture sleeve 2; it also includes an operating component, the operating component includes a combination part 3, the combination part 3 includes a combination part 3-, there is a combination channel 1 31 for combining with the puncture needle 1, and also includes a locking structure for locking the position relationship between the combination part 3- and the puncture needle 1-; it also includes a combination part 3-, there is a combination channel 2 32 for combining with the puncture sleeve; the combination channel 1 31 and the combination channel 2 32 have the same central axis, the combination part 3- is connected to the combination part 3-, and the combination part 3- is arranged at the first end of the entire operating component, and the combination part 3- is arranged at the second end of the entire component operating component, wherein the first end of the operating component is the end away from the tip of the puncture needle 1 when combined, and the second end is the end close to the tip of the puncture needle 1;

[0069] The operating component further includes an operating rod 4, which is extended outwardly from the outer side wall of the combination part 3 in two directions of a straight line, and a reference frame setting part 41 is provided on the operating rod 4 in one extending direction, for setting a reference frame recognized by the navigation system;

[0070] The combination head 11 of the puncture needle 1 is set in the combination channel 1 31, and the position and angle of the puncture needle 1 in the combination part 31 are locked by the locking structure; the combination head 21 of the puncture sleeve 2 is set in the combination channel 2 32, and in the absence of external force, the puncture sleeve 2 is stably connected to the outside of the puncture needle 1.

[0071] This arrangement ensures that the positional relationship between the reference frame set on the operating component and the operating component and the puncture needle 1 is in a locked state, ensuring that the reference frame and the puncture needle 1 move forward and backward together, and using the effective combination and separation of the front and rear puncture cannulas 2 and the operating component, it is possible to avoid the influence and interference of the reference frame on the puncture cannula 2, making the entire surgical navigation tracking operation smoother and simpler.

[0072] In a more preferred embodiment, the operating rod 4 extends in two directions perpendicular to the outer side wall of the combined part 3. This arrangement can facilitate force application and rotation operations during puncture.

[0073] In a more preferred embodiment, the operating rod 4 and the combined part 3 are both made of hard light alloy material. This arrangement can ensure the structural stability of each structure after it is set up, and can also avoid the unstable center of gravity during operation due to the excessive weight of the entire device, which may cause damage to the generated operating path.

[0074] In a more preferred embodiment, the operating rod 4 is arranged in the middle of the combined part 3, and a soft rubber block 42 is wrapped around the outside of the operating rod 4 and the combined part 3, and both ends of the soft rubber block 42 are arc-shaped structures to ensure the comfort of holding the operation.

[0075] In a more preferred embodiment, the soft rubber block 42 wraps the combination part 3 and the operating rod 4 inside, leaving a hole for allowing the puncture sleeve 2 to pass through and a hole for allowing the operating rod 4 on one side of the reference frame setting part 41 to extend out.

[0076] In a more preferred embodiment, the soft rubber block 42 is symmetrically arranged with the longitudinal axis of the combined part 3 as the symmetry axis, and the edges of the soft rubber block 42 are all rounded.

[0077] In a more preferred embodiment, the second combination head 21 is a combination head with a threaded section, and the second combination channel 32 is a threaded hole adapted to the threaded section; in this way, the purpose of combining and separating the second combination head 21 and the second combination channel 32 by rotating in different directions can be achieved, ensuring that they can move forward with the puncture needle 1 and the operating component when in use, and when separation is required, just separate the second combination head 21 from the second combination channel 32. In addition, the threaded section is provided with a Luer connector connected to a general syringe, ensuring that it can be connected to a suitable injection device when bone cement is implanted.

[0078] In a more preferred embodiment, an elliptical operating structure 22 is provided on the puncture sleeve 2, and the elliptical operating structure 22 is provided close to the combination head 21. This arrangement can very conveniently perform a rotation operation on the puncture sleeve 2, thereby achieving fast and effective combination during use and separation after use.

[0079] A more preferred embodiment is as follows: Figure 8 and 10 The combination head 11 is a non-circular head, and the combination channel 1 31 is a non-circular hole adapted thereto. The non-circular hole can ensure that when the combination is rotated to enter the surgical position, the puncture needle 1 will not rotate due to the rotational force in front, resulting in tracking errors. In a more preferred embodiment, the cross section of the non-circular head includes one or more arc segments 111 with the same center and one or more straight segments 112 connecting the arcs. In the combined state, the center of the arc segment 111 is set on the central axis of the combination channel 2 32. Because there is a circular combination head 21, the arc segment 111 makes it easier to set the combination channel 1 31 and the combination channel 2 32, and can ensure the setting of the puncture needle 1 and the puncture cannula 2 that are set in a sleeve.

[0080] In a more preferred embodiment, the combination head 11 passes through the combination channel 2 32 and enters the combination channel 1 31 to complete the combination. This arrangement ensures that the puncture sleeve 2 and the puncture needle 1 are combined from below through the combination channel 2 32, leaving space for the locking structure to be set.

[0081] A more preferred embodiment is as follows: Figure 4 and Figure 6; The locking structure includes: a threaded locking hole 51 on the combination head 11, a threaded locking nail 52, and a locking plate 53 on the combination part 3, a through hole 531 for the threaded locking nail 52 to pass through is set on the locking plate 53, and a nail cap 521 is set on the threaded locking nail 52, and the outer diameter of the nail cap 521 is larger than the outer diameter of the through hole 531; when in use, the combination head 11 is first passed through the combination channel 2 32 and then enters the combination channel 1 31 to complete the first step of the combination, and then the locking nail is passed through the through hole 531, and then combined with the threaded locking nail 52 through the threaded locking nail hole, and the position relationship between the combination head 11 and the combination channel 1 31 is locked by continuously rotating the threaded locking nail 52 until the nail cap 521 is in close contact with the locking plate 53.

[0082] In a more preferred embodiment, in the assembled state, the second assembly head 21 abuts against the first assembly head 11 to further stabilize the position of the first assembly head 11 .

[0083] In a more preferred embodiment, a receiving hole 54 for receiving the nail cap 521 is further provided in the combination part 3. This arrangement can avoid the inconvenience and unnecessary harm caused to the operator by the nail cap 521 during operation.

[0084] When in use, the reference frame is set to the reference frame setting part, and the combination head 11 of the puncture needle 1 is passed through the combination channel 2 32 and then enters the combination channel 1 31 for combination, and then the threaded locking nail 52 is used to lock the position of the puncture needle 1 and the combination channel 1 31, and then the combination head 21 of the puncture sleeve 2 is rotated and set in the combination channel 2 32, and the puncture needle 1 and the puncture sleeve 2 are combined with the operating component. Under the guidance of the navigation system, the hand holds the operating lever 4 to guide the puncture needle 1 into the appropriate position, and then the elliptical platform and the operating component are controlled to rotate relative to each other, so that the combination head 21 of the puncture sleeve 2 is separated from the combination channel 2 32, and then the puncture needle 1 fixed together and the operating component with the reference frame are separated from the puncture sleeve 2, leaving only the puncture sleeve 2 in the puncture position for the subsequent implantation of bone cement and other substances, and the injection structure can be combined with the combination head 21 later to complete the subsequent implantation of substances.

[0085] By setting the puncture needle 1 and the operating component in a combined relationship locking mode, the effect of using the puncture needle 1 for different patients can be achieved by simply replacing the puncture needle 1 and the puncture cannula 2 according to different patients. In addition, even if the puncture needle 1 is not disposable, the needle tip will be worn during use, and thus cannot meet the purpose of quick and effective entry. Therefore, the problem of replacing the puncture needle 1 after wear can be solved by combining a replaceable method.

[0086] By configuring the combination head 11 and the combination channel 1 31 to be non-circular structures respectively and arranging locking pins on the top, the combination head 11 can be locked in the combination channel very well without any up and down movement or relative rotation. The combination head 2 21 abuts against the combination head 1 11 to achieve the best position locking effect, thereby fixing the positional relationship between the reference frame and the tip of the puncture needle 1, thereby ensuring to the greatest extent that the surgical navigation system completes the tracking of the puncture needle 1 by tracking the reference frame.

[0087] The technical solutions in the embodiments of the present invention are clearly and completely described above through specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation methods. In the absence of conflict, the above embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

Claims

1. A puncture instrument for spinal navigation surgery, comprising: puncture needle; The puncture cannula is characterized in that: The operating component includes a reference frame setting part. The operating component is connected to the puncture needle in an integral or combined manner. The operating component is connected to the puncture cannula in a combined manner. The puncture cannula is combined on the operating component when in use and is separated from the operating component after use. The operating component and the puncture needle are locked in position when in use and are withdrawn from the puncture cannula at the same time after use. The puncture needle is connected to the operating component in an integral manner, or the puncture needle and the operating component are combined in an integral manner.

2. The puncture instrument according to claim 1, characterized in that: The tail end of the puncture cannula is provided with a combined head 2; the operating parts include The combination part has a combination channel 2 for combination with the puncture sleeve; the combination channel 2 is consistent with the central axis of the combination part as a whole, and the combination part 2 is arranged at the second end of the component operating part as a whole; wherein the first end of the operating part is the end away from the tip of the puncture needle when combined, and the second end is the end close to the tip of the puncture needle; An operating rod, the operating rod is extended from the outer side wall of the combination part in two directions of a straight line, and a reference frame setting part is set on the operating rod in one extending direction, which is used to set a reference frame recognized by the navigation system; The puncture needle passes through the combined channel 2; the combined head 2 of the puncture sleeve is set in the combined channel 2, and in the absence of external force, the puncture sleeve is stably sleeved on the outside of the puncture needle.

3. The puncture instrument according to claim 2, characterized in that: The puncture needle has a combined head at the tail end; an operating component, which includes The combination part 1 has a combination channel 1 for combining with the puncture needle, and also includes a locking structure for locking the positional relationship between the combination part 1 and the puncture needle 1; The central axis of the combined channel 1 is the same as that of the combined channel 2, the combined part 1 is connected to the combined part 2, and the combined part 1 is arranged at the first end of the entire operating component, and the combined part 2 is arranged at the second end of the entire component operating component, and the combined part 1 and the combined part 2 are connected to form a combined part; An operating rod, the operating rod is extended outwardly from the outer side wall of the combination part in two directions of a straight line, and a reference frame setting part is set on the operating rod in one extending direction, for setting a reference frame recognized by the navigation system; The combination head 1 of the puncture needle is set in the combination channel 1, and the position and angle of the puncture needle in the combination part 1 are locked by the locking structure; the combination head 2 of the puncture sleeve is set in the combination channel 2, and in the absence of external force, the puncture sleeve is stably connected to the outside of the puncture needle.

4. The puncture instrument according to claim 1, characterized in that: The operating rod extends in two directions perpendicular to the outer side wall of the combined part; Preferably, the operating rod and the combined part are made of hard light alloy material; Preferably, the operating rod is arranged in the middle of the combined part, and a soft rubber block is wrapped around the outside of the operating rod and the combined part, and both ends of the soft rubber block are arc-shaped structures. Preferably, the soft rubber block wraps the combined part and the operating rod inside, leaving a hole for allowing the puncture sleeve to pass through and a hole for allowing the operating rod on one side of the reference frame setting part to extend out. Preferably, the soft rubber blocks are symmetrically arranged with the longitudinal axis of the combined part as the symmetry axis, and the edges of the soft rubber blocks are rounded.

5. The puncture instrument according to claim 2, characterized in that: The second combination head is a combination head with a threaded section, and the second combination channel is a threaded hole adapted to the threaded section; Preferably, an elliptical operating structure is provided on the puncture sleeve, and the elliptical operating structure is provided close to the second combination head.

6. The puncture instrument according to claim 3, characterized in that: The first combination head is a non-circular head, and the first combination channel is a non-circular hole adapted thereto; Preferably, the cross section of the non-circular head includes one or more arc segments with the same center and one or more straight line segments connecting the arcs, and the center of the arc segment in the combined state is set on the second central axis of the combined channel; Preferably, the combination head 1 passes through the combination channel 2 and then enters the combination channel 1 to complete the combination.

7. The puncture instrument according to claim 3, characterized in that: The locking structure includes: a threaded locking hole on the combination head one, a threaded locking nail, and a locking plate on the combination part; a through hole for the threaded locking nail to pass through is arranged on the locking plate, a nail cap is arranged on the threaded locking nail, the outer diameter of the nail cap is larger than the outer diameter of the through hole, and after the nail cap is in close contact with the locking plate, the positional relationship between the combination head one and the combination channel one is locked. Preferably, in the combined state, the second combined head abuts against the first combined head to further stabilize the position of the first combined head; Preferably, a receiving hole for receiving a nail cap is also provided in the combined part.

8. A puncture needle for use with the puncture instrument according to claim 3, characterized in that: The needle body comprises a combined head part and a needle body part. The cross section of the combined head part is non-circular. A threaded locking hole is arranged in the combined head part.

9. A puncture sleeve matched with the puncture instrument according to claim 3, comprising a second combination head and a tube body, wherein the second combination head is a threaded combination hole.

10. An operating component for the puncture instrument according to claim 3, comprising: The combination part 1 has a combination channel 1 for combining with the puncture needle, and also includes a locking structure for locking the positional relationship between the combination part 1 and the puncture needle 1; The second combination part has a second combination channel for combining with the puncture sleeve; the combination channel 1 and the combination channel 2 have the same central axis, the combination part 1 is connected with the combination part 2, and the combination part 1 is arranged at the first end of the entire operating component, and the combination part 2 is arranged at the second end of the entire component operating component, and the combination part 1 and the combination part 2 are connected to form a combination part; An operating rod is extended outward from the outer side wall of the combined part in two directions of a straight line, and a reference frame setting part is set on the operating rod in one extending direction for setting a reference frame recognized by the navigation system.

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