阅读说明：本技术 可锁定式液压手术支承设备 (Lockable hydraulic surgical support apparatus ) 是由 丹尼尔·扎海纳茨 于 2018-04-13 设计创作，主要内容包括：本发明涉及一种用于在外科手术期间支承和定位患者的肢体或器械的手术支承设备。该设备由可调节结构部件构成,该可调节结构部件容纳用于锁定和解锁结构设备的单独的液压系统。结构部件包括三个可锁定接头和两个刚性支承臂。每个接头容纳液压活塞和锁环。液压压力由电动机和泵供应到接头,并由电路、压力传感器和阀控制。施加液压压力时,激活活塞,锁定接头。也可释放液压压力,以通过用户控制电路解锁接头。结构部件还包括用于将装置附接到支承结构的通用导轨夹具和用于附接附件装置的远侧快速连接件。(The present invention relates to a surgical support apparatus for supporting and positioning a limb or instrument of a patient during surgery. The device is made up of adjustable structural components that house separate hydraulic systems for locking and unlocking the structural device. The structural component includes three lockable joints and two rigid support arms. Each fitting houses a hydraulic piston and a lock ring. Hydraulic pressure is supplied to the fitting by a motor and pump and is controlled by circuitry, a pressure sensor and a valve. When hydraulic pressure is applied, the piston is activated, locking the joint. Hydraulic pressure may also be released to unlock the fitting via the user control circuit. The structural components also include a universal rail clamp for attaching the device to a support structure and a distal quick connector for attaching an accessory device.)

1. A surgical support apparatus comprising:

A base member;

a first support member rotatably coupled at a proximal end to the base member by a first joint, the first joint including a first piston assembly;

A second support member rotatably coupled to a distal end of the first support member by a second joint, the second joint including a second piston assembly;

A third joint coupled to a distal end of the second support member, the third joint including a third piston assembly; and

a drive system disposed within the base member for delivering hydraulic pressure to each of the first, second, and third joints, the drive system connected by a supply conduit to each of the first, second, and third piston assemblies;

Wherein the supply conduit comprises a first hose extending between the first fitting and the second fitting, and a second hose extending between the second fitting and the third fitting; and is

Wherein the first, second, and third piston assemblies are configured to lock and unlock the first, second, and third joints, respectively, in response to the hydraulic pressure delivered by the drive system.

2. The apparatus of claim 1, wherein the base member comprises a mounting member for attaching the apparatus to a support structure.

3. The apparatus of claim 2, wherein the mounting member is configured to allow 360 degree rotation between the apparatus and the support structure.

4. The apparatus of claim 2, wherein the support structure is selected from one of a table, a chair, or a wall of an operating room.

5. the apparatus of claim 1, wherein the first joint is a double ball-and-socket joint and the first piston assembly includes a first piston subassembly and a second piston subassembly, each of the first piston subassembly and the second piston subassembly disposed within a respective joint of the double ball-and-socket joint.

6. The apparatus of claim 5, wherein the supply conduit comprises a third tube extending between the joints of the double ball joint, the third tube being able to swivel.

7. The apparatus of claim 1, wherein the second joint is configured as a hinge to allow 360 degree rotation between the first support member and the second support member.

8. The apparatus of claim 1, wherein the second joint comprises a fixed post and a 90 degree elbow.

9. the apparatus of claim 1, wherein the third joint is a single ball-and-socket joint.

10. the apparatus of claim 1, wherein each of the first piston assembly, the second piston assembly, and the third piston assembly comprises a piston and a lock ring.

11. The device of claim 1, wherein the base member further comprises at least one user-activated control.

12. The apparatus of claim 11, wherein the at least one user-activated control is selected from a power switch, an activation button, a remote switch, and a foot pedal.

13. The apparatus of claim 1, wherein the hydraulic pressure is supplied by a pump and an electric motor of the drive system.

14. The apparatus of claim 1, wherein the hydraulic pressure is controlled by at least one valve of the drive system and a circuit board.

15. The apparatus of claim 14, wherein the at least one valve is one of a solenoid valve, a check valve, and a bleed valve.

16. The apparatus of claim 1, wherein the drive system further comprises a reservoir for containing a fluid.

17. The apparatus of claim 1, further comprising an adapter releasably coupled to the third joint for attachment to a tool or instrument.

18. the apparatus of claim 1, wherein the hydraulic pressure simultaneously locks and unlocks each of the first joint, the second joint, and the third joint.

19. The apparatus of claim 1, wherein the apparatus is configured for use in a sterile field.

20. The apparatus of claim 1, wherein at least a portion of the apparatus is covered by a sterile drape.

Technical Field

the present disclosure relates to surgical support devices, and more particularly to adjustable lockable arm supports capable of holding tools, instruments, and the like.

Background

In certain surgical procedures, it is often necessary to hold a patient's body or limb in a particular orientation or series of orientations that will be fixed and maintained over a long period of time (e.g., during orthopedic surgery on a shoulder or knee joint). In addition, several tools or instruments may need to be manipulated and held to perform the surgical procedure. Even a single instrument may have several controls that require manual manipulation, resulting in the need for additional staff or devices to hold one or more instruments during the surgical procedure.

Currently, many surgical support devices are known in the art, many of which are mechanical systems that utilize structural arms that are positioned and held by gears, springs, or clutches. Some of these devices use hydraulic pressure to lock and unlock the joint between the arms of the device in order to rotate and hold the arms in place. However, some hydraulic devices combine both structural equipment and a hydraulic pressure system into one component, for example, by using at least one of the support arms as a structural member and a hydraulic fluid conduit. Combining the two functions into one component limits the choice of materials that can be used for the structural support and the hydraulic tube. This in turn can increase the size and weight of the device, limiting its function and desirability.

disclosure of Invention

a surgical support apparatus is described herein that may be used to support and position a limb or instrument of a patient during a surgical procedure. The device is made up of adjustable structural components that house separate hydraulic systems for locking and unlocking the structural device. The structural component includes three lockable joints and two rigid support arms. Each fitting houses a hydraulic piston and a lock ring. Hydraulic pressure is supplied to the fitting by a motor and pump and is controlled by circuitry, a pressure sensor and a valve. When hydraulic pressure is applied, the piston is activated, locking the joint. Hydraulic pressure may also be released to unlock the fitting via the user control circuit. By separating the hydraulic system from the structural arms of the device, a wider range of materials can be selected to manage hydraulic pressure and structural strength. Advantageously, this allows the weight of the device and the potential for modularity of the device to be significantly reduced while still maintaining device functionality.

other examples of the surgical support apparatus of the present disclosure may include one or more of the following in any suitable combination.

In an example, a surgical support apparatus of the present disclosure includes a base member and a first support member rotatably coupled to the base member at a proximal end by a first joint. The first coupling includes a first piston assembly. The apparatus also includes a second support member rotatably coupled to the distal end of the first support member by a second joint. The second joint includes a second piston assembly. The apparatus also includes a third joint coupled to the distal end of the second support member. The third joint includes a third piston assembly. The apparatus also includes a drive system disposed within the base member for delivering hydraulic pressure to each of the first joint, the second joint, and the third joint. The drive system is connected by a supply conduit to each of the first piston assembly, the second piston assembly, and the third piston assembly. The supply conduit includes a first hose extending between the first fitting and the second fitting, and a second hose extending between the second fitting and the third fitting. The first, second and third piston assemblies are configured to lock and unlock the first, second and third joints, respectively, in response to hydraulic pressure delivered by the drive system.

In other examples of surgical support devices, the base member includes a mounting member for attaching the device to a support structure. The mounting member is configured to allow 360 degree rotation between the apparatus and the support structure. In an example, the support structure is selected from one of a table, a chair, or an operating room wall. In an example, the first joint is a double ball and socket joint and the first piston assembly includes a first piston subassembly and a second piston subassembly. Each of the first and second piston subassemblies is disposed within a respective joint of the double ball-and-socket joint. In an example, the supply conduit includes a third tube extending between the joints of the dual ball joint. The third tube can be swiveled. In an example, the second joint is configured as a hinge to allow 360 degree rotation between the first support member and the second support member. The second joint includes a fixed cylinder and a 90 degree elbow. In an example, the third joint is a single ball joint.

In other examples, the first piston assembly, the second piston assembly, and the third piston assembly include pistons and lock rings. The base member also includes at least one user-activated control. In an example, the at least one user-activated control is selected from a power switch, an activation button, a remote switch, and a foot pedal. The hydraulic pressure is supplied by a pump and an electric motor of the drive system. The hydraulic pressure is controlled by at least one valve of the circuit board and the drive system. In an example, the at least one valve is one of a solenoid valve, a check valve, and a bleed valve. The drive system further comprises a reservoir for containing a fluid. An adapter is releasably coupled to the third joint for attachment to a tool or instrument. The hydraulic pressure simultaneously locks and unlocks each of the first, second, and third joints. In an example, the apparatus is configured for use in a sterile field. In other examples, at least a portion of the device is covered by a sterile drape.

These and other features and advantages will be apparent from a reading of the following detailed description and a review of the associated drawings. It is to be understood that both the foregoing general description and the following detailed description are explanatory only and are not restrictive of aspects as claimed.

Drawings

The present disclosure will become more fully understood from the detailed description and the accompanying drawings, wherein:

Fig. 1A and 1B illustrate an exemplary surgical support apparatus of the present disclosure in perspective view (fig. 1A) and side view (fig. 1B);

FIG. 2A is a cross-sectional view of the surgical support apparatus of FIGS. 1A and 1B;

FIG. 2B is a detailed cross-sectional view of the base of the surgical support apparatus of FIGS. 1A and 1B;

FIG. 3 is a cross-sectional view of structural components of the surgical support apparatus with hydraulic components removed;

FIG. 4 is a cross-sectional view of the hydraulic system of the surgical support apparatus with structural components removed; and

Fig. 5A-5C are cross-sectional views of individual joints of the surgical support apparatus of fig. 1A and 1B.

Detailed Description

In the following description, similar components have been given the same reference numerals regardless of whether they are shown in different examples. In order to show examples in a clear and concise manner, the drawings may not necessarily be to scale and certain features may be shown in somewhat schematic form. Features that are described and/or illustrated with respect to one example may be used in the same way or in a similar way in one or more other examples and/or in combination with or instead of the features of the other examples.

as used in the specification and claims, the terms "about" and "approximately" are used for the purposes of describing and defining the present invention to represent the inherent degree of uncertainty that may be attributed to any quantitative comparison, value, measurement, or other representation. The terms "about" and "approximately" are also utilized herein to represent the degree by which a quantitative representation may vary from a stated reference without resulting in a change in the basic function of the subject matter at issue. The various forms of "including," "comprising," and/or each are open-ended and include listed components and may include additional components not listed. "and/or" is open-ended and includes one or more of the listed components and combinations of the listed components.

Turning now to fig. 1A, a perspective view of an exemplary surgical support apparatus 10 of the present disclosure is shown. The device 10 includes a base 12 having mounting members 22 (e.g., universal rail clamps) for attaching the device 10 to a support structure, such as an operating table or chair, or a wall of an operating room. The mounting member 22 is operable by means of a user control 23. The proximal end 11 of the base 12 may include a power attachment (not shown) for a power source, such as a battery. User controls 13, such as a power switch, may also be provided. The device 10 further includes a base connector 14, a middle connector 16, and a distal connector 18. The distal joint 18 is configured to provide support for an item to be held in place by the apparatus 10. For example, a tool mount or instrument adapter 20 may be releasably coupled to the distal joint 18 to secure an item to be held by the distal end of the device 10.

In the example, the base joint 14 is a double ball joint, the middle joint 16 is a hinge joint, and the distal joint 18 is a single ball joint. However, the present disclosure contemplates different types of joints and joint arrangements. A first rigid support member 24, which may be of tubular construction to resist deflection and torsional forces, interconnects the base sub 14 with the center sub 16. Extending from the middle joint 16 is a second rigid support member 26, which may also be of tubular construction, to bear against deflection and torsional forces. However, the present disclosure contemplates alternative structural components, such as custom projections or other geometric configurations of support members 24, 26. Additionally, the present disclosure contemplates alternative numbers of support members, such as three, four, or five. It is noted that each additional support member will require at least one additional joint, preferably a swivel joint, to form the apparatus 10.

FIG. 1B is a side view of the apparatus 10 of FIG. 1A. In fig. 1B, it can be seen that the base 12 further includes a plurality of user activated controls, such as an activation button 21 and a remote switch connection 25 of a remote switch (not shown). Base 12 may also include a foot pedal connector 27 for a foot pedal activation member (not shown). Other user actuators, such as voice controls, are also contemplated by the present disclosure. In addition, a manual lock and unlock backup or override mechanism may also be provided for use in the event of actuator failure. Thus, as described below, a user may lock and unlock the tabs 14, 16, 18 by one or more user-activated controls.

Fig. 2A shows the device 10 of fig. 1A and 1B in a cross-sectional view. In fig. 2A, it can be seen that the hydraulic drive system 30 is enclosed within the base 12. Connected to the drive system 30 is a series of continuous hydraulic pressure lines extending through each of the joints 14, 16, 18. Specifically, a first pressure tube 42 extends between the base fitting 14 and the mid-fitting 16, and a second pressure tube 43 extends between the mid-fitting 16 and the distal fitting 18. The drive system 30 is shown in more detail in fig. 2B. In fig. 2B, hydraulic pressure is supplied by the pump 15 and the motor 19 housed within the base 12. The hydraulic pressure is further controlled by the circuit board 17. However, other systems for applying hydraulic pressure are also contemplated by the present disclosure, such as pneumatic systems. Drive system 30 may also include a source of pressurized fluid, such as reservoir 44, and one or more pressure sensors (not shown). A control valve 45, which may include at least one of a solenoid valve, a check valve, and a bleed valve, controls the supply of fluid from the reservoir 44 and the pressure from the motor 19 and the pump 15. The control valve 45 may be manipulated by a user, for example, by depressing a foot pedal, to reconfigure the control valve 45 to discharge pressurized fluid from the reservoir 44 into the hydraulic pressure system.

Turning now to FIG. 3, the structural components of the apparatus 10 of FIGS. 1A and 1B are shown in greater detail with the hydraulic components removed. As described above, the mounting member 22 is used to secure the device 10 to a support structure, such as an operating room armrest. The mounting member 22 includes a lockable swivel 28 that allows the entire apparatus 10 to be rotated 360 degrees relative to the support structure. Mounted to the base 12 is a base fitting 14, which is comprised of a first cylinder 30a and a second cylinder 30 b. A first ball assembly 33a disposed within the first cylinder 30a is connected to a second ball assembly 33b disposed within the second cylinder 30b by a structural support 32 configured to prevent relative movement of the first ball assembly 33a with respect to the second ball assembly 33 b. The double-socket arrangement of the base joint 14 advantageously provides a greater range of motion to the base joint 14 than a single-socket arrangement. Middle joint 16 is made up of a fixed post 34 and a 90 degree elbow 36, with 90 degree elbow 36 connecting second support member 26 to middle joint 16. The relay cover 16 is configured to allow 360 degree rotation between the first support member 24 and the second support member 26. The distal joint 18 includes a distal ball assembly 35 disposed within a housing 38. In an example, the entire device 10 is covered by a sterile barrier, such as a drape (not shown), to allow use of the device 10 within a sterile field. Non-limiting examples of sterile drapes are described in U.S. publication No. 2011/0088702 to net Medical Engineering, Inc, which is incorporated herein by reference in its entirety. An optional remote switch on the drape may also be used for remote activation by the user.

FIG. 4 illustrates an exemplary hydraulic system 40 of the present disclosure for use with, for example, the apparatus 10 of FIG. 3. The drive system 30 forms a hydraulic pressure system 40 together with pressure lines 42, 43. Each joint 14, 16, 18 is open to the hydraulic pressure system 40 through a sealed piston assembly. For example, the base sub 14 is open to the system 40 through the base sub piston subassemblies 46a, 46 b. The middle sub 16 opens to the system 40 through a middle sub piston assembly 48, and the distal sub 18 opens to the system 40 through a distal sub piston assembly 50. The base sub-assemblies 46a, 46b are connected by a swivel pressure hose 52. In an example, as described in more detail below, when pressurized, the piston assemblies 46a, 46b, 48, and 50 engage structural members of the joints 14, 16, 18 and simultaneously apply a locking force. However, the present disclosure also contemplates independent locking and unlocking of each of the connectors 14, 16, 18. For example, additional pressure conduits may extend between the joints 14, 16, 18 to isolate the hydraulic pressure at each joint.

discussion will now turn to fig. 5A, which shows an enlarged view of base sub-assembly 46b (base sub-assembly 46a is substantially a mirror image thereof). As shown in fig. 5A, the piston 53 is slidably displaced in the axial direction inside the second cylinder 30 b. In an example, one or more seals 55 circumscribe the piston 53 to establish a seal between the piston 53 and the second cylinder 30 b. The seals 55 are separated by one or more spacers 66. The seal 55 and spacer 66 are held in place by a retaining ring 68. A pressure hose 52 attached to subassembly 46a (fig. 4) allows pressurized fluid from subassembly 46a to communicate with subassembly 46 b. Pressure hose 52 is also sealingly coupled within second cylinder 30b by seal 55. Due to the pressure hose 52, pressurized fluid is supplied to both subassemblies 46a, 46b simultaneously.

To lock the second ball assembly 33b relative to the second cylinder 30b (and similarly the first ball assembly 33a relative to the first cylinder 30a), pressurized fluid is supplied to a region of the subassembly 46 b. The pressurized fluid applies a force to the piston 53 to push the piston 53 in the direction of arrow 70. Thus, the piston 53 is pushed to travel in the direction of arrow 70 until it engages the second ball assembly 33b, thereby compressing the second ball assembly 33b against the locking ring 72. The second ball component 33b engages the locking ring 72, for example, by a friction fit or a wedge fit. When this occurs, the second ball assembly 33b is maintained in a locked configuration relative to the second post 30b, thereby preventing any relative movement therebetween. Thus, the supply of pressurized fluid causes the base sub 14 to become locked in place. The pressurized fluid is also communicated to a first pressure tube 42 in first support member 24 to allow the pressurized fluid to be communicated to intermediate joint 16 (fig. 5B).

The middle joint 16 is shown in an enlarged view in fig. 5B. In fig. 5B, the piston 82 is slidably displaced axially within the stationary cylinder 34. The piston 82 is separated from a retaining ring 88 by a bearing 86. In an example, one or more seals 84 circumscribe the piston 82 to establish a seal between the piston 82 and the stationary cylinder 34. The seals 84 are separated by one or more spacers 81. The seal 84 and spacer 81 are held in place by a retaining ring 88. To lock the mid-joint piston assembly 48 relative to the stationary cylinder 34, pressurized fluid is supplied to the area of the mid-joint piston assembly 48. The pressurized fluid applies a force to the piston 82 to urge the piston 82 in the direction of arrow 90. Thus, piston 82 is urged to travel in the direction of arrow 90 until piston 82 engages locking ring 92. The piston 82 engages the locking ring 92, for example, by a friction fit or a wedge fit. When this occurs, elbow 36 is maintained in a locked configuration relative to housing 34, thereby preventing any relative movement therebetween. Thus, the pressurized fluid supply causes the union 16 to become locked in place. The pressurized fluid is also communicated to a second pressure tube 43 in the second support member 26 to allow the pressurized fluid to be communicated to the distal joint 18 (fig. 5C).

Fig. 5C is an enlarged view of distal tip 18, including distal tip piston assembly 50 disposed within housing 38. The piston 102 is axially slidably displaceable within the housing 38. In an example, one or more seals 104 circumscribe the piston 102 to establish a seal between the piston 102 and the housing 38. The seals 104 are separated by one or more spacers 103. To lock the distal connector 18, pressurized fluid is supplied to the area of the distal connector piston assembly 50. The pressurized fluid applies a force to the piston 102 to push the piston 102 in the direction of arrow 110. Thus, the piston 102 is pushed to travel in the direction of arrow 110 until the distal ball assembly 35 engages the locking ring 106, thereby compressing the distal ball assembly 35 against the locking ring 106. The distal ball assembly 35 engages the locking ring 106, for example, by a friction fit or a wedge fit. When this occurs, the distal ball assembly 35 is maintained in a locked configuration relative to the housing 38, preventing any relative movement therebetween. Thus, the pressurized fluid supply causes the distal connector 18 to become locked in place.

While the present disclosure has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present application as defined by the appended claims. Such variations are intended to be covered by the scope of the present application. Accordingly, the foregoing description of examples of the present application is not intended to be limiting, but is to be accorded the full scope as conveyed by the appended claims.