CN217772506U - Auxiliary device for interventional operation - Google Patents

Abstract

The application relates to an interventional operation auxiliary device, which comprises a fixing mechanism, a positioning mechanism and a clamping mechanism; one end of a first inner rod of the positioning mechanism extends into the inner cavity of the first sleeve and is provided with a first inclined surface, a pushing piece is at least provided with a second inclined surface at one side close to the inner cavity of the first shaft rod, an acute angle is formed between the first inclined surface and the second inclined surface, and the other end of the first inner rod extends into the inner cavity of the first sleeve head. The device realizes locking two, namely the first connecting arm and the second connecting arm, and the first connecting arm and the clamping mechanism are locked simultaneously by rotating the locking joint. Because the first inclined plane no longer coincides with the second inclined plane, only part butt joint can reduce the area of contact on two inclined planes to the resistance of joint knob when locking has effectively been reduced. The included angle between the first inclined plane and the second inclined plane is set to be an acute angle, so that the axial acting force of the first inner rod on the pushing piece can be reduced, the risk of loosening is reduced while the joint knob is convenient to screw down, and the locking reliability is ensured.

Description

Auxiliary device for interventional operation

Technical Field

The application relates to the field of medical equipment, in particular to an interventional operation auxiliary device.

Background

In recent years, the interventional therapy technology of heart valve diseases makes a major breakthrough, compared with the traditional surgical operation, the interventional therapy operation does not need to open the chest, does not need extracorporeal circulation and cardiac arrest, has small wound and quick postoperative recovery, and gradually becomes a standard operation which is widely applied. However, the existing interventional methods all require the operator to hold the instrument for operation, and the hand-held instrument affects the accuracy of the operator in operating the instrument to a certain extent and causes uncertainty, thereby increasing the risk of the operation and affecting the success rate of the operation. In addition, since it is often difficult to grasp the direction when the hand-held instrument is operated, the operator needs an assistant to assist the operation. The difficulty of hand-held operation limits the widespread use of interventional procedures to some extent. Although there are currently available surgical stents for supporting stable interventional instruments, these surgical stents usually include a plurality of connecting arms for adjusting height, angle, etc., and the connecting arms need to be locked and unlocked separately, which is cumbersome, time-consuming and complicated.

SUMMERY OF THE UTILITY MODEL

The application provides an intervention operation auxiliary device to solve the technical problem of complex operation.

The application provides an interventional operation auxiliary device, which comprises a fixing mechanism, a positioning mechanism and a clamping mechanism; wherein the content of the first and second substances,

the positioning mechanism comprises a first connecting arm, a second connecting arm, a first ball joint and a locking joint, one end of the first connecting arm is connected with one end of the second connecting arm through the locking joint, the other end of the first connecting arm is connected with the clamping mechanism through the first ball joint, and the other end of the second connecting arm is connected with the fixing mechanism;

the first connecting arm comprises a first shaft rod, a first sleeve fixedly connected with the first shaft rod and a first inner rod coaxially arranged in an inner cavity of the first shaft rod in a penetrating manner, the central axis of the first shaft rod is vertical to the central axis of the first sleeve, and the inner cavity of the first shaft rod is communicated with the inner cavity of the first sleeve;

the second connecting arm comprises a second shaft rod and a second sleeve fixedly connected with the second shaft rod, the central axis of the second shaft rod is perpendicular to the central axis of the second sleeve, the first sleeve and the second sleeve are coaxially stacked, and the inner cavity of the first sleeve is axially communicated with the inner cavity of the second sleeve;

the locking joint comprises a pushing piece and a joint knob, wherein the pushing piece is sequentially arranged in the inner cavity of the first sleeve, the inner cavity of the second sleeve and the joint knob in a penetrating manner and is in threaded connection with the joint knob;

the first ball joint comprises a first sleeve head and a first ball head, the first sleeve head is sleeved on the first shaft rod, an inner cavity of the first sleeve head is axially communicated with an inner cavity of the first shaft rod, the first ball head comprises a first movable end and a first connecting end, the first movable end is arranged in the inner cavity of the first sleeve head, and the first connecting end is connected with the clamping mechanism;

one end of the first inner rod extends into the inner cavity of the first sleeve and is provided with a first inclined surface, the pushing piece is at least provided with a second inclined surface at one side close to the inner cavity of the first shaft rod, an acute angle is formed between the first inclined surface and the second inclined surface, and the other end of the first inner rod extends into the inner cavity of the first sleeve head.

Exemplarily, a first included angle is formed between the first inclined surface and the central axis of the first inner rod, and a second included angle is formed between the first inclined surface and the second inclined surface;

wherein the range of the first included angle is [30 degrees, 70 degrees ], and the sum of the second included angle and the first included angle is less than or equal to 90 degrees.

Illustratively, the first included angle is 30 ° and the second included angle is in the range of [10 °,25 ° ].

Illustratively, the pushing piece comprises a first pushing portion and a rod body connected with the first pushing portion, a second inclined surface is arranged on the first pushing portion, the first pushing portion is arranged in an inner cavity of the first sleeve in a penetrating mode, and the rod body penetrates out of the inner cavity of the first sleeve and is in threaded connection with the joint knob.

Exemplarily, the positioning mechanism further comprises a second ball joint, and the other end of the second connecting arm is connected with the fixing mechanism through the second ball joint;

the second connecting arm also comprises a second inner rod coaxially arranged in the inner cavity of the second shaft rod in a penetrating manner, and the inner cavity of the second shaft rod is communicated with the inner cavity of the second sleeve;

the pushing piece also comprises a second pushing part connected to the rod body, and the second pushing part is coaxially arranged in the inner cavity of the second sleeve in a penetrating manner;

the second ball joint comprises a second sleeve and a second ball head, the second sleeve is sleeved on the second shaft rod, the inner cavity of the second sleeve is axially communicated with the inner cavity of the second shaft rod, the second ball head comprises a second movable end and a second connecting end, the second movable end is arranged in the inner cavity of the second sleeve, and the second connecting end is connected with the fixing mechanism;

one end of the second inner rod extends into the inner cavity of the second sleeve and is provided with a third inclined surface, the second pushing part is at least provided with a fourth inclined surface at one side close to the inner cavity of the second shaft rod, an acute angle is formed between the third inclined surface and the fourth inclined surface, and the other end of the second inner rod extends into the inner cavity of the second sleeve head.

Illustratively, a third included angle is formed between the third inclined surface and the central axis of the second inner rod, and a fourth included angle is formed between the third inclined surface and the fourth inclined surface;

wherein the third included angle is in a range of [30 degrees and 70 degrees ], and the sum of the fourth included angle and the third included angle is less than or equal to 90 degrees.

Illustratively, the third included angle is 30 and the fourth included angle is in the range of [10, 25 ].

Exemplarily, the first sleeve head comprises a first connecting sleeve, a second connecting sleeve and a first shaft limiting part;

the first connecting sleeve is sleeved on the first shaft rod, the second connecting sleeve is in threaded connection with the first connecting sleeve to limit an inner cavity of the first sleeve head, and the first shaft limiting piece is in threaded connection with the first shaft rod in the inner cavity of the first sleeve head;

the first inner rod is provided with an end head, the end head is provided with a concave surface matched with the spherical surface of the first movable end, and the second connecting sleeve is provided with an inner spherical surface matched with the spherical surface of the first movable end.

Exemplarily, the auxiliary device for interventional operation further comprises a fine adjustment mechanism for connecting the positioning mechanism and the clamping mechanism, wherein the fine adjustment mechanism comprises a third sleeve head, a third ball head, a tray and a locking screw;

the tray has the horn mouth, the tray is worn to adorn in the inner chamber of third pullover coaxially, the third bulb includes third expansion end and third link, the third expansion end is located in the inner chamber of third pullover and at least part stretches into in the horn mouth with the inner wall cooperation of horn mouth, the third link is connected with fixture, the tray is connected with first link, locking screw stretches into in the inner chamber of third pullover and cooperates with the outer wall of horn mouth from the periphery wall of third pullover.

Illustratively, the clamping mechanism includes an upper clamp, a lower clamp, a stud, a clamping knob, an upper sleeve, and a lower sleeve;

go up pincers and lower pincers and rotate to be connected and realize the centre gripping with the relative opening and shutting motion through last pincers and lower pincers, the direction of going up the external member perpendicular to and going up pincers and opening and shutting motion with lower pincers inlays and locates in last pincers, the direction of the upper member perpendicular to and going up pincers and opening and shutting motion with lower pincers inlays and locate in the lower pincers, stud passes last external member in the pincers in proper order and the lower external member in the lower pincers and with last external member and lower external member threaded connection, the screw thread of going up the external member is revolved to the screw thread opposite with the external member down, the one end threaded connection of centre gripping knob and stud.

Exemplarily, the interventional operation auxiliary device further comprises a feeding mechanism connected with the positioning mechanism, and the feeding mechanism comprises a shell, a screw rod and a feeding knob;

the screw rod is loaded in the shell, the shell is provided with an axial slotted hole, the clamping mechanism is in threaded connection with the screw rod through the axial slotted hole, and the feeding knob is fixedly connected with one end of the screw rod.

Illustratively, the securing mechanism includes a vertical rod, a base, and a base knob;

the vertical rod is connected with the other end of the second connecting arm, the base is sleeved on the vertical rod and provided with a mounting groove and a mounting hole communicated with the mounting groove, and the base knob is in threaded connection with the mounting hole and extends into the mounting groove.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages: above-mentioned intervene operation auxiliary device has realized locking two at least, and rotatory tightening locking joint locks first connecting arm and second connecting arm simultaneously and first connecting arm and fixture promptly. In addition, because of first inclined plane and the only partial butt in second inclined plane, can reduce the area of contact on two inclined planes to effectively reduced the resistance of joint knob when locking, improved user's use and experienced. The included angle between the first inclined plane and the second inclined plane is set to be an acute angle, so that the axial acting force of the first inner rod on the pushing piece can be reduced, the risk of loosening is reduced while the joint knob is convenient to screw down, and the locking reliability is ensured.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and, together with the description, serve to explain the principles of the application.

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of an auxiliary device for an interventional operation provided in an embodiment of the present application;

FIG. 2 is a schematic view of the positioning mechanism of FIG. 1;

FIG. 3 is an exploded view of FIG. 2;

FIG. 4 is a cross-sectional view of FIG. 2 in an unlocked state;

FIG. 5 is a cross-sectional view of FIG. 2 in a locked condition;

FIG. 6 is a schematic view of an exemplary embodiment of the first sleeve of FIG. 1 positioned over the second sleeve;

FIG. 7 is a schematic illustration of another example embodiment of the first sleeve of FIG. 1 disposed over the second sleeve;

FIG. 8 is an exploded view of the securing mechanism of FIG. 1;

FIG. 9 is a schematic structural view of the clamping mechanism of FIG. 1;

FIG. 10 is an exploded view of FIG. 9;

fig. 11 is a schematic structural diagram of a fine adjustment mechanism of an interventional procedure assistance device provided in an embodiment of the present application;

FIG. 12 is an exploded view of FIG. 11;

FIG. 13 is a cross-sectional view of the micro-adjustment mechanism of FIG. 11 after locking;

FIG. 14 is a schematic structural view of the connection between the clamping mechanism and the feeding mechanism of the auxiliary device for interventional operation provided by the embodiment of the application;

FIG. 15 is a schematic view of the feed mechanism of FIG. 14;

FIG. 16 is an exploded view of FIG. 15;

fig. 17 is a schematic view of the interventional procedure assistance device of the present application after holding an interventional medical device.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it should be noted that, in the field of interventional medical devices, the proximal end refers to the end closer to the operator, and the distal end refers to the end farther from the operator; axial refers to a direction parallel to the line joining the center of the distal end and the center of the proximal end of the medical device. It is noted that the term "end" as used herein, whether in the context of "proximal end", "distal end", "one end", "another end", "first end", "second end", "initial end", "terminal end", "two ends", "free end", "upper end", "lower end", and the like, is not limited to a tip, end or end surface, but also includes a portion extending an axial and/or radial distance from the tip, end or end surface over the component to which the tip, end or end surface pertains. The above definitions are for convenience of description only and should not be construed as limiting the present application.

Referring to fig. 1 to 7, an interventional procedure assistance device 1 according to an embodiment of the present application includes a fixing mechanism 11, a positioning mechanism 12, and a holding mechanism 13. The positioning mechanism 12 includes a first connecting arm 121, a second connecting arm 122, a first ball joint 123, and a locking joint 124. One end of the first connecting arm 121 is connected to one end of the second connecting arm 122 through a locking joint 124, the other end of the first connecting arm 121 is connected to the clamping mechanism 13 through a first ball joint 123, and the other end of the second connecting arm 122 is connected to the fixing mechanism 11. The first connecting arm 121 includes a first shaft 1211, a first sleeve 1212 fixedly connected to the first shaft 1211, and a first inner rod 1213 coaxially inserted into the inner cavity of the first shaft 1211. The central axis A1 of the first shaft 1211 is perpendicular to the central axis A2 of the first sleeve 1212, and the inner cavity of the first shaft 1211 communicates with the inner cavity of the first sleeve 1212. The second connecting arm 122 includes a second shaft 1221 and a second sleeve 1222 fixedly connected to the second shaft 1221. The central axis A3 of the second shaft 1221 is perpendicular to the central axis A4 of the second sleeve 1222, the first sleeve 1212 and the second sleeve 1222 are coaxially stacked, and the inner cavity of the first sleeve 1212 is axially communicated with the inner cavity of the second sleeve 1222. The locking joint 124 includes a push member 1241 and a joint knob 1242. The pushing member 1241 is inserted into the inner cavity of the first sleeve 1212 and the inner cavity of the second sleeve 1222, and is threaded out of the joint knob 1242. The first ball joint 123 includes a first cuff 1231 and a first ball head 1232. The first sleeve 1231 is sleeved on the first shaft 1211, and an inner cavity of the first sleeve 1231 is axially communicated with an inner cavity of the first shaft 1211. The first ball head 1232 includes a first movable end 1232a and a first connection end 1232b, the first movable end 1232a is disposed in the inner cavity of the first sleeve head 1231, and the first connection end 1232b is connected to the clamping mechanism 13. One end of the first inner rod 1213 extends into the inner cavity of the first sleeve 1212 and is provided with a first inclined surface B1, the pushing member 1241 is provided with a second inclined surface B2 at least at one side close to the inner cavity of the first shaft 1211, an acute angle is formed between the first inclined surface B1 and the second inclined surface B2, and the other end of the first inner rod 1213 extends into the inner cavity of the first sleeve 1231.

The interventional operation assisting device 1 according to the embodiment of the application is used for clamping an interventional medical instrument in an interventional operation, the first connecting arm 121 and the second connecting arm 122 are connected through the locking joint 124, and the first connecting arm 121 is connected with the clamping mechanism 13 for clamping the interventional medical instrument through the first ball joint 123 so as to control the interventional medical instrument from multiple angles and multiple positions. When the joint knob 1242 of the locking joint 124 is screwed, the pushing member 1241 moves to make the second inclined surface B2 contact with the first inclined surface B1 of the first inner rod 1213 and then push the first inner rod 1213 to contact with the first ball 1232 to lock the first ball 1232, and the first connecting arm 121 and the clamping mechanism 13 are relatively fixed; meanwhile, the pushing piece 1241 presses the first sleeve 1212 of the first connecting arm 121 and the second sleeve 1222 of the second connecting arm 122, so that the first connecting arm 121 and the second connecting arm 122 are fixed relatively. In this way, the second locking is realized, that is, the tightening of the locking joint 124 simultaneously locks the first connecting arm 121 and the second connecting arm 122, and the first connecting arm 121 and the clamping mechanism 13.

It can be understood that the second inclined surface B2 moves along the direction of the central axis A0 of the pushing member 1241 (coinciding with the central axis A2 of the first sleeve 1212) to abut against the first inclined surface B1 to generate an urging force acting on the first inclined surface B1 in the direction of the central axis A5 of the first inner rod 1213 (coinciding with the central axis A1 of the first shaft 1211), and this urging force along the direction of A1 causes the first inner rod 1213 to move towards the first ball 1232 of the first ball joint 123, so that the gap F1 (see fig. 4) between the first inner rod 1213 and the first ball 1232 is gradually reduced, and when the gap F1 in which the first ball 1232 can move flexibly is gradually reduced to a point where the end portion of the first inner rod 1213 contacts the first movable end 1232a of the first ball 1232 (see fig. 5), the first ball 1232 is locked and no longer moves.

In addition, because the first inclined plane B1 only partially butts with the second inclined plane B2, the contact area of the two inclined planes can be reduced, so that the resistance of the locking joint 124 during locking is effectively reduced, and the use experience of a user is improved. An included angle C2 between the first inclined plane B1 and the second inclined plane B2 is set to be an acute angle, so that the axial acting force of the first inner rod 1213 on the pushing piece 1241 can be reduced, the risk of loosening is reduced while the joint knob 1242 is conveniently screwed down, and the locking reliability is ensured.

Of course, unscrewing the locking joint 124 can also unlock the first connecting arm 121 and the second connecting arm 122, and the first connecting arm 121 and the clamping mechanism 13 at the same time, so that the first connecting arm 121 and the second connecting arm 122 can move relatively, and the first connecting arm 121 and the clamping mechanism 13 can move relatively. In addition, after installation, the central axis A0 of the pusher 1241, the central axis A2 of the first sleeve 1212, and the central axis A4 of the second sleeve 1222 coincide; the central axis A1 of the first shaft 1211, the central axis A3 of the second shaft 1221, and the central axis A5 of the first inner rod 1213 coincide.

Specifically, the pushing member 1241 includes a first pushing portion 1241a and a rod 1241b connected to the first pushing portion. The first pushing portion 1241a is provided with a second inclined plane B2, the first pushing portion 1241a is inserted into the inner cavity of the first sleeve 1212, and the rod body 1241B penetrates out of the inner cavity of the first sleeve 1212 to be in threaded connection with the joint knob 1242.

In the example of fig. 5 and 6, the first push portion 1241a is fixedly connected to one end of the rod body 1241b, and the first push portion 1241a has a sectional diameter longer than that of the rod body 1241b. In fig. 5, the first sleeve 1212 is located below the second sleeve 1222, the first pushing portion 1241a is inserted into the inner cavity of the first sleeve 1212, and the rod 1241b sequentially passes through the inner cavity of the first sleeve 1212 and the inner cavity of the second sleeve 1222. In fig. 6, the first sleeve 1212 is located above the second sleeve 1222, the first pushing portion 1241a is inserted into the inner cavity of the second sleeve 1222 and the inner cavity of the first sleeve 1212, and the rod 1241b is inserted through the inner cavity of the first sleeve 1212. In the example of fig. 7, the first pushing portion 1241a is movably sleeved on the rod body 1241b and connected with the rod body 1241 b; the first sleeve 1212 is located above the second sleeve 1222, the first pushing portion 1241a is inserted into the inner cavity of the first sleeve 1212, and the rod 1241b is inserted through the inner cavity of the second sleeve 1222 and the inner cavity of the first sleeve 1212 in sequence.

It should be noted that, because one end of the first inner rod 1213 extends into the inner cavity of the first sleeve 1212, the first pushing portion 1241a inserted into the inner cavity of the first sleeve 1212 is provided with the second inclined surface B2 at a side close to the inner cavity of the first shaft 1211, and the first inner rod 1213 restricts the rotation of the first pushing portion 1241a, the problem that the first inclined surface B1 and the second inclined surface B2 cannot be smoothly abutted and contacted due to the offset caused by the rotation of the first pushing portion 1241a does not occur. In addition, when the joint knob 1242 is rotated, the rod body 1241b is moved closer to or farther from the joint knob 1242, and the rod body 1241b is not rotated. Of course, the first pushing portion 1241a may also be provided with a tapered surface as the second inclined surface B2, so that even if the first pushing portion 1241a rotates, the second inclined surface B2 and the first inclined surface B1 will not be misaligned.

Referring to fig. 4, in some embodiments, the first inclined surface B1 forms a first included angle C1 with the central axis A5 of the first inner stem 1213, and the first inclined surface B1 forms a second included angle C2 with the second inclined surface B2. Wherein, the range of the first included angle C1 is [30 degrees, 70 degrees ], and the sum of the second included angle C2 and the first included angle C1 is less than or equal to 90 degrees. Thus, the pushing element 1241 is moved to push the first inner rod 1213 more easily, so that the first inner rod 1213 presses the first ball 1232. Further, the first angle C1 may be set to 30 °, and the second angle C2 may range from [10 °,25 ° ]. It is understood that the first included angle C1 ranges from [30 °,70 ° ], i.e., the angle of the first included angle C1 may be 30 °,70 °, or any angle between 30 ° and 70 °. The second included angle C2 is in the range of [10 °,25 ° ], i.e., the angle of the second included angle C2 may be any angle between 10 °,25 °, or 10 ° to 25 °.

Referring to fig. 4, 5 and 7, in some embodiments, the positioning mechanism 12 further includes a second ball joint 125, and the other end of the second connecting arm 122 is connected to the fixing mechanism 11 through the second ball joint 125. The second connecting arm 122 further includes a second inner rod 1223 coaxially inserted into the inner cavity of the second shaft 1221, and the inner cavity of the second shaft 1221 is communicated with the inner cavity of the second sleeve 1222. The pushing member 1241 further includes a second pushing portion 1241c connected to the rod 1241b, and the second pushing portion 1241c is coaxially inserted into the inner cavity of the second sleeve 1222. The second ball joint 125 includes a second socket 1251 and a second ball 1252. The second sleeve 1251 is sleeved on the second shaft 1221, and the inner cavity of the second sleeve 1251 is axially communicated with the inner cavity of the second shaft 1221. The second ball 1252 includes a second movable end 1252a and a second connecting end 1252b. A second movable end 1252a is disposed in the interior cavity of the second sleeve 1251 and a second connecting end 1252b is coupled to the securing mechanism 11. One end of the second inner rod 1223 extends into the inner cavity of the second sleeve 1222 and is provided with a third inclined surface B3, the second pushing portion 1241c is provided with a fourth inclined surface B4 at least at one side close to the inner cavity of the second shaft 1221, an acute angle is formed between the third inclined surface B3 and the fourth inclined surface B4, and the other end of the second inner rod 1223 extends into the inner cavity of the second sleeve 1251.

The second connecting arm 122 is connected to the fixing mechanism 11 through a second ball 1252, and the angle and position of the second connecting arm 122 can be adjusted relative to the fixing mechanism 11. When the joint knob 1242 of the locking joint 124 is screwed, the first pushing part 1241a moves to make the second inclined surface B2 contact with the first inclined surface B1 of the first inner rod 1213 and then push the first inner rod 1213 to contact with the first ball head 1232 to lock the first ball head 1232, and the first connecting arm 121 and the clamping mechanism 13 are relatively fixed; the second pushing portion 1241c moves to make the fourth inclined surface B4 contact with the third inclined surface B3 of the second inner rod 1223 and then push the second inner rod 1223 to contact with the second ball 1252 to lock the second ball 1252, and the second connecting arm 122 and the fixing mechanism 11 are relatively fixed; meanwhile, the pushing member 1241 is moved to press the first sleeve 1212 of the first connecting arm 121 and the second sleeve 122 of the second connecting arm 122, so that the first connecting arm 121 and the second connecting arm 122 are relatively fixed. In this way, the locking is achieved, that is, the tightening of the locking joint 124 simultaneously locks the first connecting arm 121 and the second connecting arm 122, the first connecting arm 121 and the clamping mechanism 13, and the second connecting arm 122 and the fixing mechanism 11.

It can be understood that the fourth inclined surface B4 moves along the direction of the central axis A0 of the pushing member 1241 to abut against the third inclined surface B3 to generate an urging force, which acts on the third inclined surface B3 to generate an urging force along the direction of the central axis A6 of the second inner rod 1223 (coinciding with the central axis A3 of the second shaft 1221), and this urging force along the direction A3 causes the second inner rod 1223 to move toward the second ball 1252 of the second ball joint 125, so that the gap F2 (see fig. 4) between the second inner rod 1223 and the second ball 1252 is gradually reduced, and when the gap F2, through which the second ball 1252 can move flexibly, is gradually reduced to a point where the end portion of the second inner rod 1223 contacts with the second movable end 1252a of the second ball 1252 (see fig. 5), the second ball 1252 is locked and no longer moves. Please refer to the foregoing description for the locking principle of the first ball 1232, which is not described herein again.

Similarly, because the third inclined plane B3 only partially abuts against the fourth inclined plane B4, the contact area of the two inclined planes can be reduced, so that the resistance of the joint knob 1242 during locking is effectively reduced, and the use experience of a user is improved. An included angle C4 between the third inclined surface B3 and the fourth inclined surface B4 is set to be an acute angle, so that the axial acting force of the second inner rod 1223 on the second pushing portion 1241C can be reduced, the risk of loosening is reduced while the joint knob 1242 is conveniently screwed, and the locking reliability is ensured.

Of course, unscrewing the locking joint 124 can also unlock the first connecting arm 121 and the second connecting arm 122, the first connecting arm 121 and the clamping mechanism 13, and the second connecting arm 122 and the fixing mechanism 11 at the same time, so that the first connecting arm 121 and the second connecting arm 122 can move relatively, the first connecting arm 121 and the clamping mechanism 13 can move relatively, and the second connecting arm 122 and the fixing mechanism 11 can move relatively.

In the example of fig. 5, a first pushing portion 1241a is fixedly connected to one end of a rod body 1241b, a second pushing portion 1241c is movably sleeved on the rod body 1241b and connected with the rod body 1241b, a first sleeve 1212 is located below a second sleeve 1222, the first pushing portion 1241 is inserted into an inner cavity of the first sleeve 1212, the second pushing portion 1241c is inserted into an inner cavity of the second sleeve 1222, and the rod body 1241b sequentially passes through the inner cavity of the first sleeve 1212 and the inner cavity of the second sleeve 1222. In the example of fig. 7, the second pushing portion 1241c is fixedly connected to one end of the rod body 1241b, the first pushing portion 1241a is movably sleeved on the rod body 1241b and connected with the rod body 1241, the first sleeve 1212 is located above the second sleeve 1222, the first pushing portion 1241 is inserted into the inner cavity of the first sleeve 1212, the second pushing portion 1241c is inserted into the inner cavity of the second sleeve 1222, and the rod body 1241b sequentially passes through the inner cavity of the second sleeve 1222 and the inner cavity of the first sleeve 1212.

It should be noted that, because one end of the second inner rod 1223 extends into the inner cavity of the second sleeve 1222, the second driving portion 1241c penetrating the inner cavity of the second sleeve 1222 is provided with a fourth inclined surface B4 at a side close to the inner cavity of the second shaft 1221, and the second inner rod 1223 restricts the rotation of the second driving portion 1241c, the problem that the third inclined surface B3 and the fourth inclined surface B4 cannot be smoothly contacted due to the offset of the rotation of the second driving portion 1241c will not occur. Of course, the first driving portion 1241a may also be provided with a tapered surface as the second inclined surface B2, so that even if the first driving portion 1241 rotates, the second inclined surface B2 does not generate a misalignment with the first inclined surface B1.

Referring to fig. 6, in some embodiments, the second shaft 1221 may also be a solid structure and may be detachably fixed or non-detachably fixed with the fixing mechanism 11 instead of being connected by the second ball joint 125, which is only used as an example and is not a limitation of the present application.

Referring to fig. 4, in some embodiments, the third inclined surface B3 has a third included angle C3 with the central axis A6 of the second inner stem 1223, and the third inclined surface B3 has a fourth included angle C4 with the fourth inclined surface B4. Wherein the third included angle C3 ranges from [30 degrees, 70 degrees ], and the sum of the fourth included angle C4 and the third included angle C3 is less than or equal to 90 degrees. Thus, the second pushing portion 1241c is more easily moved to push the second inner rod 1223, so that the second inner rod 1223 abuts against the second ball 1252. Further, the third angle C3 is 30 °, and the fourth angle C4 ranges from [10 °,25 ° ]. It is understood that the third included angle C3 ranges from [30 °,70 ° ], i.e., the angle of the third included angle C3 may be 30 °,70 °, or any angle between 30 ° and 70 °. The range of the fourth included angle C4 is [10 °,25 ° ], that is, the angle of the fourth included angle C4 may be any angle between 10 °,25 °, or 10 ° to 25 °.

Referring to fig. 3 and 4, in some embodiments, the first sleeve 1231 of the first ball joint 123 includes a first connecting sleeve 1231a, a second connecting sleeve 1231b, and a first axis limiting member 1231c. The first coupling sleeve 1231a is sleeved on the first shaft 1211, the second coupling sleeve 1231b is threadedly coupled with the first coupling sleeve to define an inner cavity of the first sleeve 1231, and the first shaft stopper 1231c is threadedly coupled with the first shaft 1211 in the inner cavity of the first sleeve 1231 to prevent the first coupling sleeve 1231a from being detached from the first shaft 1211. The first inner rod 1213 is provided with an end 1213a, the end 1213a has a concave surface D12 that is engaged with the spherical surface D11 of the first movable end 1232a of the first ball head 1232, and the second connection sleeve 1231b has an inner spherical surface D13 that is engaged with the spherical surface D11 of the first movable end 1232a, so as to ensure stable locking of the first ball head 1232. The first ball 1232 can be an M8 ball. When the concave surface D12 has a sufficient clearance F1 with the spherical surface D11 of the first movable end 1232a, the first ball 1232 can flexibly rotate, so as to flexibly adjust the angle and direction of the interventional medical device clamped on the clamping mechanism 13. When the gap F1 is reduced to the concave surface D12 contacting with the spherical surface D11 of the first movable end 1232a during the abutting and pushing process of the first inclined surface B1 and the second inclined surface B2, the first ball 1232 is limited in movement, so as to realize the locking control of the locking joint 124 on the first connecting arm 121 and the clamping mechanism 13.

In some embodiments, the second socket 1251 of the second ball joint 125 includes a third connecting sleeve 1251a, a fourth connecting sleeve 1251b, and a second shaft stop 1251c. The third connection housing 1251a is sleeved on the second shaft 1221, the fourth connection housing 1251b is threadedly connected with the third connection housing 1251a to define an inner cavity of the second connection housing 1251, and the second shaft stopper 1251c is threadedly connected with the second shaft 1221 in the inner cavity of the second connection housing 1251 to prevent the third connection housing 1251a from being detached from the second shaft 1221. The second inner rod 1223 is provided with a head 1223a, the head 1223a has a concave surface D22 matching with the spherical surface D21 of the second movable end 1252a of the second ball head 1252, and the second connecting sleeve 1251b has an inner spherical surface D23 matching with the spherical surface D21 of the second movable end 1252a, so as to ensure the stable locking of the second ball head 1252. The second ball 1252 may be an M8 ball. When the concave surface D22 has a sufficient clearance F2 with the spherical surface D21 of the second movable end 1252a, the second ball 1252 can flexibly rotate, so as to flexibly adjust the angle and direction of the second connecting arm 122; when the gap F2 is reduced to the extent that the concave surface D22 contacts with the spherical surface D21 of the second movable end 1252a in the abutting and pushing process of the third inclined surface B3 and the fourth inclined surface B4, the second ball 1252 is restricted in movement, so that the locking joint 124 controls the locking of the second connecting arm 121 and the fixing mechanism 11.

Referring to fig. 8, in some embodiments, the securing mechanism 11 includes a stem 111, a base 112, and a base knob 113. The vertical rod 111 is connected with the other end of the second connecting arm 122, the base 112 is sleeved on the vertical rod 111, the base 112 is provided with an installation groove 112a and an installation hole 112b communicated with the installation groove 112a, and the base knob 113 is in threaded connection with the installation hole 112b and extends into the installation groove 112 a.

It will be appreciated that the securing mechanism 11 may be used to secure the interventional procedure assistance device 1 to a surgical bed or table. In one embodiment, the fixing mechanism 11 includes two base knobs 113, two mounting holes 112b are formed on the base 112, the edge of the surgical bed or the surgical table is embedded in the mounting holes 112a, and the two base knobs 113 are respectively connected with the two mounting holes 112b by screw threads and extend into the mounting holes 112a to abut against the edge of the surgical bed or the surgical table, so as to provide stable support. The fixing mechanism 11 further comprises two supporting knobs 114, the two supporting knobs 114 are respectively screwed with the two base knobs 113, and the supporting knobs 114 are used for increasing the contact area between the base knobs 113 and the operation bed or the operation table, so that the fixing mechanism 11 can be more stably fixed on the edge of the operation bed or the operation table. The base 112 is provided with a mounting through hole 116, and the vertical rod 111 is inserted into the mounting through hole 116 and the relative position of the vertical rod 111 and the base 112 is fixed by a rod knob 115. In addition, the base 112 is provided with a protrusion 116a towards the central axis of the mounting through hole 116, and the vertical rod 111 is provided with a groove stopper 111a matched with the protrusion 116a on the base 112, so that the vertical rod 111 does not cause the overall radial rotation of the interventional operation auxiliary device 1 when moving up and down. Of course, the base 112 can also be fixed on the vertical rod 111 by welding.

Referring to fig. 9 and 10, in certain embodiments, the clamping mechanism 13 includes an upper jaw 131, a lower jaw 132, a stud 133, a clamping knob 134, an upper sleeve 135, and a lower sleeve 136. The upper jaw 131 and the lower jaw 132 are rotatably coupled to achieve gripping by relative opening and closing movement of the upper jaw 131 and the lower jaw 132. The upper sleeve 135 is embedded in the upper jaw 131 perpendicular to the opening and closing movement direction A7 of the upper jaw 131 and the lower jaw 132, the lower sleeve 136 is embedded in the lower jaw 132 perpendicular to the opening and closing movement direction A7 of the upper jaw 131 and the lower jaw 132, the stud 133 sequentially passes through the upper sleeve 135 in the upper jaw 131 and the lower sleeve 136 in the lower jaw 132 and is in threaded connection with the upper sleeve 135 and the lower sleeve 136, the thread direction of the upper sleeve 135 is opposite to that of the lower sleeve 136, and the clamping knob 134 is in threaded connection with one end of the stud 133.

It will be appreciated that the upper jaw 131 and the lower jaw 132 are rotatably connected by a screw 138, the upper jaw 131 and the lower jaw 132 are provided with through holes along the direction A7 of the opening and closing movement thereof, and the upper sleeve 135 and the lower sleeve 136 are fitted into the through holes of the upper jaw 131 and the lower jaw 132, respectively. The stud 133 has two sections of threads with opposite rotation directions, which are respectively in threaded engagement with the upper sleeve 135 and the lower sleeve 136, for example, the upper half section of the stud 133 may be a left-hand thread, the lower half section may be a right-hand thread, and the corresponding upper sleeve 135 and the lower sleeve 136 may also be a left-hand thread and a right-hand thread, respectively. When the clamping knob 134 is tightened, the stud 133 makes the upper sleeve 135 and the lower sleeve 136 move toward each other toward the middle by means of screw-thread fit, and simultaneously drives the upper jaw 131 and the lower jaw 132 to clamp the interventional medical device toward the middle due to the fact that the upper sleeve 135 and the lower sleeve 136 are embedded in the upper jaw 131 and the lower jaw 132 respectively. Wherein, during the process of clamping the upper jaw 131 and the lower jaw 132 towards the middle, the relative angle between the stud 133 and the upper jaw 131 and the lower jaw 132 is constantly changing. Since the upper and lower sleeves 135, 136 can rotate a certain amount in the upper and lower jaws 131, 132, respectively, it is ensured that the stud 133 can remain rotated during clamping of the upper and lower jaws 131, 132.

Referring to fig. 11-13, in some embodiments, the interventional procedure assistance device 1 further includes a fine adjustment mechanism 14 connecting the positioning mechanism 12 and the clamping mechanism 13. The fine adjustment mechanism 14 includes a third socket 141, a third ball 142, a tray 143, and a locking screw 144. The tray 143 has a flared opening 1431, and the tray 143 is coaxially inserted into the inner cavity of the third casing head 141. The third ball head 142 includes a third movable end 1421 and a third connecting end 1422. The third movable end 1421 is disposed in the inner cavity of the third sleeve 141, and at least a portion of the third movable end 1421 extends into the bell mouth 1431 to be engaged with the inner wall of the bell mouth 1431, and the third connecting end 1422 is connected to the clamping mechanism 13. The tray 143 is coupled to the first coupling end 1232 b. The locking screw 144 extends from the outer peripheral wall of the third socket 141 into the inner cavity of the third socket 141 and engages with the outer wall of the bell 1431.

Specifically, the fine adjustment mechanism 14 further includes a connection sleeve 145, the tray 143 is screwed or snap-fixed to the connection sleeve 145, and the first connection end 1232b of the first ball 1232 is connected to the tray 143 by being screwed to the connection sleeve 145. The third casing head 141 includes a fifth connection sleeve 1411 and a sixth connection sleeve 1412, the sixth connection sleeve 1412 is sleeved on the connection sleeve 145 and is in clearance fit, and the fifth connection sleeve 1411 and the sixth connection sleeve 1412 are connected through threads to define an inner cavity of the third casing head 141. The peripheral wall of the fifth connecting sleeve 1411 is provided with a threaded hole 141a for matching and connecting with the locking screw 144. The bell mouth 1431 of the tray 143 and the third movable end 1421 of the third ball head 142 are located in the inner cavity of the third socket 141, and the locking screw 144 can abut against the inclined outer wall of the bell mouth 1431 through the screw hole 141a of the fifth connecting sleeve 1411. When the locking screw 144 is tightened, the locking screw 144 moves towards the inner cavity of the third sleeve 141 to press the outer wall of the bell mouth 1431, the pressing force decomposes an axial force through the outer wall of the inclined bell mouth 1431, so that the third ball 142 is pushed outwards through the bell mouth 1431, and the third ball 142 is attached to and fixed in a space formed by the fifth sleeve 1411 and the bell mouth 1431, and locking is achieved.

Referring to fig. 14-16, in some embodiments, the interventional procedure assistance device 1 further includes a feeding mechanism 15 coupled to the positioning mechanism 12. The feed mechanism 15 includes a housing 151, a lead screw 152, and a feed knob 153. The screw 152 is mounted in the housing 151, the housing 151 is provided with an axial slot 151a, the clamping mechanism 13 is in threaded connection with the screw 152 through the axial slot 151a, and the feed knob 153 is fixedly connected with one end of the screw 152.

Specifically, the housing 151 includes a case 1511 and an upper cover 1512, and the positioning mechanism 12 is connected to the case 1511. The lower jaw 132 of the clamping mechanism 13 is provided with a lead screw nut 137 for threaded connection with a lead screw 152. The clamping mechanism 13 is connected with the screw 152 and then installed in the housing 1511, the upper cover 1512 is connected with the housing 1511 through screws, and the housing 1511 and the upper cover 1512 are matched to limit the screw 152 therein, so that the screw 152 can only rotate radially but cannot move axially. The axial slot 151a of the housing 151 forms a radial limit for the lower jaw 132, so that when the screw 152 is rotated, the clamping mechanism 13 can only perform axial linear motion along the axial slot 151 a. The feed knob 153 is screwed to the screw 152, and the screw 152 is rotated by rotating the feed knob 153, so that the clamp mechanism 13 linearly moves in the axial direction along the axial groove hole 151 a.

Referring to fig. 17, the interventional operation assisting device 1 according to the example of the present application includes a fixing mechanism 11, a positioning mechanism 12, a fine adjustment mechanism 14, a feeding mechanism 15, and a clamping mechanism 13, wherein the fixing mechanism 11 is connected to a second connecting arm 122 of the positioning mechanism 12, a first connecting arm 121 of the positioning mechanism 12 is connected to the fine adjustment mechanism 14, the fine adjustment mechanism 14 is connected to the feeding mechanism 15, and the feeding mechanism 15 is connected to the clamping mechanism 13. The procedure of using the interventional operation assistance device 1 will be described below.

Firstly, before an operation, the interventional operation auxiliary device 1 is fixed at the edge of an operation sickbed through the fixing mechanism 11, and the vertical rod 111 is adjusted up and down to a proper height to be locked and fixed according to the individual condition of a patient and the operation requirement.

Then, the desired position and angle of the interventional medical device 2 is located by the locating mechanism 12. Specifically, the locking joint 124 is first unscrewed, and at this time, the three joints in the positioning mechanism 12 are linked to enable the clamping mechanism 13 to be positioned at any position and angle in a certain space. After the clamping mechanism 13 is positioned to a required position and angle, the interventional medical device 2 is fixed by the clamping mechanism 13, and then the locking joint 124 is screwed down to realize locking control, so that the positioning is completed.

Finally, when the positioning mechanism 12 and the clamping mechanism 13 are locked, the feeding knob 153 is rotated to advance the interventional medical device 2 to a desired position for a surgical procedure. Since the lower jaw 132 of the clamping mechanism 13 is in threaded connection with the screw 152 of the feeding mechanism 15, the clamping mechanism 13 and the interventional medical device 2 can move together along the axial direction of the screw 152 by rotating the feeding knob 153. Meanwhile, the screw rod 152 of the feeding mechanism 15 and the clamping plane of the clamping mechanism 13 are perpendicular to each other, so that the advancing direction of the interventional medical device 2 is always in the same straight line with the self axial direction.

It should be noted that, during the operation, after the position and the angle of the interventional medical device 2 are determined, the locking joint 124 is no longer movable, and the effect of maintaining the stability of the interventional medical device 2 is achieved. Thereafter intraoperative angular adjustment of the interventional medical device 2 can be accomplished by the fine adjustment mechanism 14. During the operation, the operator finely adjusts the angle of the interventional medical device 2 according to the operation requirement, specifically, unscrews the locking screw 144 of the fine adjustment mechanism 14, rotates the interventional medical device 2 to the required angle, and tightens the locking screw 144 again to complete the fixation of the interventional medical device 2.

After the procedure is completed, the feed knob 153 of the feed mechanism 15 is rotated in the reverse direction to withdraw the interventional medical device 2 completely from the patient's body, and the interventional medical device 2 is removed by releasing the clamping mechanism 13.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

In the description herein, references to the description of the term "one embodiment," "certain embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (12)

1. An interventional operation auxiliary device is characterized by comprising a fixing mechanism, a positioning mechanism and a clamping mechanism; wherein the content of the first and second substances,

the positioning mechanism comprises a first connecting arm, a second connecting arm, a first ball joint and a locking joint, one end of the first connecting arm is connected with one end of the second connecting arm through the locking joint, the other end of the first connecting arm is connected with the clamping mechanism through the first ball joint, and the other end of the second connecting arm is connected with the fixing mechanism;

the first connecting arm comprises a first shaft rod, a first sleeve fixedly connected with the first shaft rod and a first inner rod coaxially arranged in an inner cavity of the first shaft rod in a penetrating mode, the central axis of the first shaft rod is perpendicular to the central axis of the first sleeve, and the inner cavity of the first shaft rod is communicated with the inner cavity of the first sleeve;

the second connecting arm comprises a second shaft rod and a second sleeve fixedly connected with the second shaft rod, the central axis of the second shaft rod is perpendicular to the central axis of the second sleeve, the first sleeve and the second sleeve are coaxially stacked, and the inner cavity of the first sleeve is axially communicated with the inner cavity of the second sleeve;

the locking joint comprises a pushing piece and a joint knob, and the pushing piece is arranged in the inner cavity of the first sleeve and the inner cavity of the second sleeve in a penetrating manner and is in threaded connection with the joint knob;

the first ball joint comprises a first sleeve head and a first ball head, the first sleeve head is sleeved on the first shaft rod, an inner cavity of the first sleeve head is axially communicated with an inner cavity of the first shaft rod, the first ball head comprises a first movable end and a first connecting end, the first movable end is arranged in the inner cavity of the first sleeve head, and the first connecting end is connected with the clamping mechanism;

one end of the first inner rod extends into the inner cavity of the first sleeve and is provided with a first inclined surface, the pushing piece is at least provided with a second inclined surface at one side close to the inner cavity of the first shaft rod, an acute angle is formed between the first inclined surface and the second inclined surface, and the other end of the first inner rod extends into the inner cavity of the first sleeve head.

2. The interventional procedure assistance device of claim 1, wherein the first bevel has a first angle with a central axis of the first inner rod and the first bevel has a second angle with the second bevel;

wherein the range of the first included angle is [30 degrees, 70 degrees ], and the sum of the second included angle and the first included angle is less than or equal to 90 degrees.

3. An interventional procedure assistance device according to claim 2, wherein the first included angle is 30 ° and the second included angle ranges from [10 °,25 ° ].

4. The interventional operation assisting device according to any one of claims 1 to 3, wherein the pushing member includes a first pushing portion and a rod body connected to the first pushing portion, the second inclined surface is provided on the first pushing portion, the first pushing portion is inserted into the inner cavity of the first sleeve, and the rod body penetrates from the inner cavity of the first sleeve and is in threaded connection with the joint knob.

5. The interventional procedure assistance device of claim 4, wherein the positioning mechanism further comprises a second ball joint, the other end of the second connecting arm being connected to the fixation mechanism by the second ball joint;

the second connecting arm also comprises a second inner rod coaxially arranged in an inner cavity of the second shaft rod in a penetrating manner, and the inner cavity of the second shaft rod is communicated with the inner cavity of the second sleeve;

the pushing piece further comprises a second pushing part connected to the rod body, and the second pushing part is coaxially arranged in the inner cavity of the second sleeve in a penetrating mode;

the second ball joint comprises a second sleeve head and a second ball head, the second sleeve head is sleeved on the second shaft rod, an inner cavity of the second sleeve head is axially communicated with an inner cavity of the second shaft rod, the second ball head comprises a second movable end and a second connecting end, the second movable end is arranged in the inner cavity of the second sleeve head, and the second connecting end is connected with the fixing mechanism;

one end of the second inner rod extends into the inner cavity of the second sleeve and is provided with a third inclined surface, the second pushing portion is at least provided with a fourth inclined surface at one side close to the inner cavity of the second shaft rod, an acute angle is formed between the third inclined surface and the fourth inclined surface, and the other end of the second inner rod extends into the inner cavity of the second sleeve head.

6. The interventional procedure assistance device of claim 5, wherein the third bevel has a third angle with the central axis of the second inner rod and the third bevel has a fourth angle with the fourth bevel;

wherein the third included angle ranges from [30 degrees, 70 degrees ], and the sum of the fourth included angle and the third included angle is less than or equal to 90 degrees.

7. An interventional procedure assistance device according to claim 6, wherein the third included angle is 30 ° and the fourth included angle ranges from [10 °,25 ° ].

8. The interventional procedure assistance device of claim 1, wherein the first hub comprises a first connection sleeve, a second connection sleeve, and a first axis limiter;

the first connecting sleeve is sleeved on the first shaft rod, the second connecting sleeve is in threaded connection with the first connecting sleeve to limit an inner cavity of the first sleeve head, and the first shaft limiting part is in threaded connection with the first shaft rod in the inner cavity of the first sleeve head;

the first inner rod is provided with an end socket, the end socket is provided with a concave surface matched with the spherical surface of the first movable end, and the second connecting sleeve is provided with an inner spherical surface matched with the spherical surface of the first movable end.

9. The interventional procedure assistance device of claim 1, further comprising a fine adjustment mechanism connecting the positioning mechanism and the clamping mechanism, the fine adjustment mechanism including a third socket, a third ball, a tray, and a locking screw;

the tray is provided with a horn mouth, the tray is coaxially arranged in an inner cavity of the third sleeve head in a penetrating mode, the third ball head comprises a third movable end and a third connecting end, the third movable end is arranged in the inner cavity of the third sleeve head, at least part of the third movable end extends into the horn mouth and is matched with the inner wall of the horn mouth, the third connecting end is connected with the clamping mechanism, the tray is connected with the first connecting end, and the locking screw extends into the inner cavity of the third sleeve head and is matched with the outer wall of the horn mouth from the peripheral wall of the third sleeve head.

10. The interventional procedure assistance device of claim 1, wherein the clamping mechanism comprises an upper clamp, a lower clamp, a stud, a clamping knob, an upper set, and a lower set;

the upper pliers and the lower pliers are rotatably connected to realize clamping through relative opening and closing movement of the upper pliers and the lower pliers, the upper sleeve is perpendicular to the direction of the opening and closing movement of the upper pliers and the lower pliers and is embedded in the upper pliers, the lower sleeve is perpendicular to the direction of the opening and closing movement of the upper pliers and the lower pliers and is embedded in the lower pliers, the stud sequentially penetrates through the upper sleeve in the upper pliers and the lower sleeve in the lower pliers and is in threaded connection with the upper sleeve and the lower sleeve, the thread turning direction of the upper sleeve is opposite to that of the lower sleeve, and the clamping knob is in threaded connection with one end of the stud.

11. The interventional procedure assistance device of claim 1, further comprising a feed mechanism coupled to the positioning mechanism, the feed mechanism comprising a housing, a lead screw, and a feed knob;

the screw rod is loaded in the shell, an axial slotted hole is formed in the shell, the clamping mechanism is in threaded connection with the screw rod through the axial slotted hole, and the feeding knob is fixedly connected with one end of the screw rod.

12. The interventional procedure assistance device of claim 1, wherein the securing mechanism comprises a vertical post, a base, and a base knob;

the vertical rod is connected with the other end of the second connecting arm, the base is sleeved on the vertical rod and provided with a mounting groove and a mounting hole communicated with the mounting groove, and the base knob is in threaded connection with the mounting hole and extends into the mounting groove.

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