Clinical cold compress device for bone joint operation

Abstract

The invention discloses a bone joint operation clinical cold compress device, and relates to the technical field of clinical cold compress, the bone joint operation clinical cold compress device comprises an adjusting mechanism, the tail end of the adjusting mechanism is fixedly connected with a refrigeration mechanism, the bottom of the refrigeration mechanism is hinged to the interior of a base mechanism, and the front side of the adjusting mechanism is fixedly connected to the back of the base mechanism; a fixing mechanism is hinged to the right side of the base mechanism. A bevel gear I is driven by a driving motor to rotate, so that a bevel gear II is driven to rotate, the height of the right side of a refrigerating mechanism is adjusted, a user can conveniently put in and take out a part needing cold compress, in the cold compress process, the cold compress part is fixed, the cold compress part is prevented from moving, and then the cold compress effect is improved; and air is blown to the surface of the condensation pipe, the cooling speed of the condensation pipe is increased, the cold compress requirement is met, and then through cooperation of the electric rotating rod and the condensation pipe and temperature adjustment of the device, the cold compress requirements of different conditions are met.

Description

Technical Field

[0001] The present invention relates to the technical field of clinical cold compress, and in particular to a clinical cold compress device for bone and joint surgery. Background Art

[0002] Arthroscopic surgery involves inserting a metal tube with a lens and lighting device into the joint cavity through a very small incision, and magnifying the internal structure of the joint cavity on a monitor to observe the pathological conditions and locations in the joint cavity. At the same time, a comprehensive inspection and cleaning of the diseased areas are performed under television monitoring. After orthopedic joint surgery, blood vessels in the skin, muscles, bones and other tissues around the incision may rupture and bleed. Local cold compresses can promote vasoconstriction, reduce bleeding, and reduce local swelling. Cold compresses can also reduce inflammatory reactions around the incision and have an analgesic effect. The postoperative cold compress time is generally within 48-72 hours. Depending on the amount of bleeding from the incision and the degree of swelling in the surgical area, the cold compress time can be appropriately increased or decreased.

[0003] The existing cold compress device fixing steps are relatively complicated, and after being fixed on the part requiring cold compress, the part requiring cold compress is easily moved due to the long-term pressure of the cold compress device, which leads to poor cold compress effect. Summary of the invention

[0004] The purpose of the present invention is to provide a clinical cold compress device for bone and joint surgery to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A clinical cold compress device for bone and joint surgery includes an adjustment mechanism, the tail end of the adjustment mechanism is fixedly connected to a refrigeration mechanism, the bottom of the refrigeration mechanism is hinged inside a base mechanism, the front side of the adjustment mechanism is fixedly connected to the back of the base mechanism, the right side of the base mechanism is hinged to a fixing mechanism, and the left side of the fixing mechanism is fixedly connected to the right side of the refrigeration mechanism.

[0007] The adjustment mechanism includes a dustproof box, the interior of the dustproof box is fixedly connected to a support plate, the top of the dustproof box is fixedly connected to a drive motor, and the output end of the drive motor extends to the interior of the dustproof box, and the output end of the drive motor is fixedly connected to a bevel gear 1.

[0008] A further improvement of the technical solution of the present invention is that: the tail end of the bevel gear one passes through the inner middle part of the support plate, the surface of the bevel gear one is fixedly connected to a limiting plate, the limiting plate is located on the upper surface of the support plate, the bevel gear one is meshed with bevel gear two, the tail end of the bevel gear two passes through the front side of the dustproof box, the limiting plate is located above the support plate, and then cooperates with the bevel gear one to support and fix the bevel gear one.

[0009] A further improvement of the technical solution of the present invention is that the refrigeration mechanism includes an arc-shaped outer shell, a thermal insulation pad is fixedly connected to the inner upper side of the arc-shaped outer shell, ventilation holes are provided on the surface of the thermal insulation pad and the upper and lower surfaces of the arc-shaped outer shell, and a connecting rod is hinged on the left side of the arc-shaped outer shell. The ventilation holes can promote the flow of air inside and outside the arc-shaped outer shell, thereby prompting the cold air in the arc-shaped outer shell to flow out from the ventilation holes and cover the surface of the user that needs cooling, thereby providing cooling treatment to the user.

[0010] A further improvement of the technical solution of the present invention is that the tail end of the connecting rod is fixedly connected to the tail end of bevel gear 2, the lower surface of the arc-shaped outer shell is fixedly connected with a water-isolating pad, the bottom of the water-isolating pad is sleeved with a fluff pad, and the interior of the arc-shaped outer shell is fixedly connected with a refrigeration component. The water-isolating pad can absorb water vapor generated when cold and hot air intersect to prevent the water vapor from wetting the fluff pad, thereby improving the comfort of the user.

[0011] A further improvement of the technical solution of the present invention is that the refrigeration component includes a condenser, one end of the condenser is fixedly connected to a refrigeration system, the middle of the condenser is fixedly connected to a circulating water pump, an electric rotating rod is provided on the inner upper side of the arc-shaped shell, the surface of the electric rotating rod is fixedly connected to fan blades, the electric rotating rod and the fan blades are both located above the condenser, the refrigeration system is started to cool the condensate, and then the circulating water pump is started to drive the condensate to circulate in the condenser and the refrigeration system, thereby ensuring that the temperature at each position of the condenser is the same.

[0012] A further improvement of the technical solution of the present invention is that the base mechanism includes a bottom plate, the rear side of the bottom plate is fixedly connected to the front side of the dustproof box, the left side of the upper surface of the bottom plate is hinged to the outer surface of the connecting rod, the upper surface of the bottom plate is fixedly connected to an air cushion, the air cushion is sleeved on the bottom of the arc-shaped outer shell, the inside of the air cushion is fixedly connected to an inflation tube, and after the air cushion is inflated, it can wrap the outer side of the part of the user that needs cold compress, thereby fixing the part that needs cold compress.

[0013] A further improvement of the technical solution of the present invention is that: the inflation tube is fixedly connected to the inside of the base plate, the air inlet end of the inflation tube is threadedly connected to an air pump, the back of the air pump is fixedly connected to the front side of the base plate, the inner wall of the air cushion is fixedly connected to a soft pad, the lower surface of the base plate is fixedly connected to a non-slip pad, the soft pad is on the inner wall of the air cushion, in direct contact with the user's skin, thereby improving comfort during use.

[0014] A further improvement of the technical solution of the present invention is that: the fixing mechanism includes a cross bar, the front and rear ends of the cross bar are both sleeved inside the right side of the bottom plate, the surface of the cross bar is fixedly connected to an L-shaped baffle, the left side of the L-shaped baffle is fixedly connected to a soft plate, the bottom of the soft plate is fixedly connected to a Velcro, and rotating the L-shaped baffle can drive the cross bar to rotate inside the bottom plate, thereby fixing the L-shaped baffle.

[0015] A further improvement of the technical solution of the present invention is that: Velcro 2 is adhered to the lower surface of Velcro 1, the bottom of Velcro 2 is fixedly connected with a connecting plate, the left side of the connecting plate is fixedly connected to the right side of the arc-shaped shell, and the upper surface of the connecting plate is fixedly connected with a rubber pad, and the rubber pad is tightly attached to the lower surface of the L-shaped baffle. Velcro 1 is pressed against the surface of Velcro 2, and then Velcro 1 is fixed, cooperating with the rubber pad, thereby improving the fixing strength of the L-shaped baffle.

[0016] Due to the adoption of the above technical solution, the present invention has the following technical advances compared with the prior art:

[0017] 1. The present invention provides a clinical cold compress device for bone and joint surgery. The driving motor drives the bevel gear 1 to rotate, thereby driving the bevel gear 2 to rotate, and then driving the connecting rod to rotate, and then the height of the right side of the refrigeration mechanism is adjusted through the connecting rod, so that the refrigeration mechanism can automatically adjust the height of its right side, thereby facilitating the user to put the part to be cold-compressed in for cold compress and take it out after cold compressing. At the same time, during the cold compress process, the cold compress part can be fixed to avoid movement of the cold compress part, thereby improving the cold compress effect.

[0018] 2. The present invention provides a clinical cold compress device for bone and joint surgery. By starting the electric rotating rod and driving the fan blades to rotate, wind can be introduced into the interior of the outer shell through the ventilation holes on the upper part of the arc-shaped outer shell, thereby blowing the wind toward the surface of the condenser tube to further reduce the temperature of the surface of the condenser tube, and at the same time blown toward the inside of the fluff pad to further reduce the temperature of the fluff pad to meet the cold compress demand, and then through the coordination of the electric rotating rod and the condenser tube, the temperature of the device can be adjusted to meet the cold compress needs in different situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the adjustment mechanism of the present invention;

[0021] Figure 3 It is a cross-sectional structural schematic diagram of the refrigeration mechanism of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the refrigeration assembly of the present invention;

[0023] Figure 5 It is a schematic diagram of the base mechanism structure of the present invention;

[0024] Figure 6 It is a schematic diagram of the fixing mechanism structure of the present invention.

[0025] In the figure: 1. adjustment mechanism; 11. dustproof box; 12. support plate; 13. drive motor; 14. bevel gear one; 15. limit plate; 16. bevel gear two; 2. refrigeration mechanism; 21. arc-shaped shell; 22. insulation pad; 23. ventilation hole; 24. connecting rod; 25. water-proof pad; 26. fluff pad; 27. refrigeration component; 271. condenser; 272. refrigeration system; 273. circulating water pump; 274. electric rotating rod; 275. fan blade; 3. base mechanism; 31. bottom plate; 32. air cushion; 33. inflation tube; 34. inflation pump; 35. soft pad; 36. anti-slip pad; 4. fixing mechanism; 41. cross bar; 42. L-shaped baffle; 43. soft board; 44. Velcro one; 45. Velcro two; 46. connecting plate; 47. rubber pad. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with embodiments:

[0027] Example 1

[0028] like Figure 1-6 As shown, the present invention provides a clinical cold compress device for bone and joint surgery, comprising an adjusting mechanism 1, the tail end of the adjusting mechanism 1 is fixedly connected with a refrigeration mechanism 2, the bottom of the refrigeration mechanism 2 is hinged inside a base mechanism 3, the front side of the adjusting mechanism 1 is fixedly connected to the back of the base mechanism 3, the right side of the base mechanism 3 is hinged with a fixing mechanism 4, the left side of the fixing mechanism 4 is fixedly connected to the right side of the refrigeration mechanism 2, the adjusting mechanism 1 comprises a dustproof box 11, the inside of the dustproof box 11 is fixedly connected with a support plate 12, the top of the dustproof box 11 is fixedly connected with a driving motor 13, and the output end of the driving motor 13 extends to the inside of the dustproof box 11, the output end of the driving motor 13 is fixedly connected with a bevel gear 14, the tail end of the bevel gear 14 passes through the inner middle part of the support plate 12, the surface of the bevel gear 14 is fixedly connected with a limiting plate 15, the limiting plate 15 is located on the upper surface of the support plate 12, the bevel gear 14 is meshed with a bevel gear 2 16, and the tail end of the bevel gear 2 16 passes through the front side of the dustproof box 11;

[0029] Specifically, the driving motor 13 runs, driving the bevel gear 14 to rotate, and the bevel gear 14 meshes with the bevel gear 2 16, thereby driving the bevel gear 2 16 to rotate, and the bevel gear 2 16 is connected to the connecting rod 24, and thereby can drive the right side of the refrigeration mechanism 2 to move upward through the connecting rod 24, so that the user can put the part to be cooled. After putting it in, the driving motor 13 drives the bevel gear 14 to rotate in the opposite direction, thereby driving the bevel gear 2 16 to rotate in the opposite direction, and then drives the right side of the refrigeration mechanism 2 to move downward through the connecting rod 24, so that it is close to the surface of the bottom plate 31, and then turns off the driving motor 13, so that the refrigeration mechanism 2 is located above the part to be cooled.

[0030] Example 2

[0031] like Figure 1-6 As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, the refrigeration mechanism 2 includes an arc-shaped shell 21, a heat preservation pad 22 is fixedly connected to the inner upper side of the arc-shaped shell 21, ventilation holes 23 are provided on the surface of the heat preservation pad 22 and the upper and lower surfaces of the arc-shaped shell 21, a connecting rod 24 is hinged on the left side of the arc-shaped shell 21, the tail end of the connecting rod 24 is fixedly connected to the tail end of the bevel gear 216, a water-proof pad 25 is fixedly connected to the lower surface of the arc-shaped shell 21, a fluff pad 26 is sleeved on the bottom of the water-proof pad 25, a refrigeration assembly 27 is fixedly connected to the inside of the arc-shaped shell 21, and the refrigeration assembly 27 includes a condenser 271, one end of the condenser 271 is fixedly connected to a refrigeration system 272, and the middle of the condenser 271 is fixedly connected to a circulating water pump 273, an electric rotating rod 274 is arranged on the inner upper side of the arc-shaped shell 21, a fan blade 275 is fixedly connected to the surface of the electric rotating rod 274, and the electric rotating rod 274 and the fan blade 275 are both located above the condenser 271;

[0032] Specifically, the heat preservation pad 22 covers the upper side of the inner part of the arc-shaped shell 21 to reduce the diffusion of cold air on the top of the arc-shaped shell 21, thereby ensuring the stability of the temperature inside the arc-shaped shell 21. After the condensate is placed in the condenser tube 271, the refrigeration system 272 is started to refrigerate the condensate, and then the circulating water pump 273 is started to drive the condensate to circulate in the condenser tube 271 and the refrigeration system 272, thereby ensuring that the temperature at each position of the condenser tube 271 is the same. The generated cold air flows to the water-proof pad 25 and the fluff pad 26 through the ventilation holes 23 at the bottom of the arc-shaped shell 21. After the user's part that needs cold compress is fixed, The cold compress position is in contact with the fluff pad 26, and then the cold air passes through the fluff pad 26 to perform cold compress treatment on the user. If the temperature required for the cold compress is low, the electric rotating rod 274 is started to drive the fan blades 275 to rotate, and the wind can be introduced into the interior of the shell through the ventilation holes 23 on the upper part of the arc-shaped shell 21, thereby blowing the wind to the surface of the condenser 271, and the temperature of the surface of the condenser 271 is further reduced, and at the same time, it is blown to the inside of the fluff pad 26, so that the temperature of the fluff pad 26 is reduced again, thereby meeting the cold compress demand. At the same time, by controlling the electric rotating rod 274, the temperature of the device can be adjusted to meet the cold compress needs in different situations.

[0033] Example 3

[0034] like Figure 1-6 As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, the base mechanism 3 includes a bottom plate 31, the rear side of the bottom plate 31 is fixedly connected to the front side of the dustproof box 11, the left side of the upper surface of the bottom plate 31 is hinged to the outer surface of the connecting rod 24, the upper surface of the bottom plate 31 is fixedly connected to an air cushion 32, the air cushion 32 is sleeved on the bottom of the arc-shaped shell 21, the inside of the air cushion 32 is fixedly connected to an inflation tube 33, the inflation tube 33 is fixedly connected to the inside of the bottom plate 31, the air inlet end of the inflation tube 33 is threadedly connected to an inflation pump 34, the back of the inflation pump 34 is fixedly connected to the front side of the bottom plate 31, the inner wall of the air cushion 32 is fixedly connected to a soft pad 35, and the lower surface of the bottom plate 31 is fixedly connected to an anti-slip pad 36;

[0035] Specifically, the user places the part that needs cold compress on the surface of the soft cushion 35, then starts the adjustment mechanism 1 to drive the arc-shaped shell 21 to be located above the cold compress part, starts the air pump 34, and inflates the air into the air cushion 32 through the air inflation tube 33, so that the air cushion 32 swells, driving the part that needs cold compress to move upward, and fixes the cold compress part at the same time. After fixation, turn off the air pump 34, and the anti-slip pad 36 increases the friction between the supporting object to avoid movement during the cold compress process, thereby improving the cold compress effect. After the cold compress is completed, the air inflation tube 33 is unscrewed from the output end of the air pump 34, so that the internal gas of the air cushion 32 is discharged through the air inflation tube 33, and then the adjustment mechanism 1 is used to move the right side of the arc-shaped shell 21 upward, so as to facilitate the removal of the cold compress part.

[0036] like Figure 6 The fixing mechanism 4 includes a cross bar 41, the front and rear ends of the cross bar 41 are sleeved inside the right side of the bottom plate 31, an L-shaped baffle 42 is fixedly connected to the surface of the cross bar 41, a soft board 43 is fixedly connected to the left side of the L-shaped baffle 42, a Velcro 1 44 is fixedly connected to the bottom of the soft board 43, a Velcro 2 45 is attached to the lower surface of the Velcro 1 44, a connecting plate 46 is fixedly connected to the bottom of the Velcro 2 45, the left side of the connecting plate 46 is fixedly connected to the right side of the arc-shaped housing 21, a rubber pad 47 is fixedly connected to the upper surface of the connecting plate 46, and the rubber pad 47 is tightly attached to the lower surface of the L-shaped baffle 42;

[0037] Specifically, when the adjustment mechanism 1 drives the bottom of the arc-shaped shell 21 to fit against the bottom plate 31, the L-shaped baffle 42 is moved to the upper left, thereby driving the cross bar 41 to rotate, so that the lower surface of the L-shaped baffle 42 fits against the rubber pad 47, and then the soft plate 43 is pressed downward to make the Velcro 1 44 and the Velcro 2 45 fit tightly, and then cooperate with the rubber pad to improve the fixing strength of the arc-shaped shell 21, avoid the movement of the device during cold compress, improve the stability of the cold compress device, and thus improve the cold compress effect.

[0038] The working principle of the clinical cold compress device for bone and joint surgery will be described in detail below.

[0039] like Figure 1-6As shown, the user places the part that needs cold compress on the surface of the soft pad 35, starts the driving motor 13 to drive the bevel gear 1 14 to rotate, the bevel gear 1 14 is meshed with the bevel gear 2 16, and then can drive the bevel gear 2 16 to rotate, the bevel gear 2 16 is connected to the connecting rod 24, and then can drive the right side of the arc-shaped shell 21 to move downward through the connecting rod 24, so that the fluff pad 26 is located above the cold compress part, turn off the driving motor 13, move the L-shaped baffle 42 to the upper left, thereby driving the cross bar 41 to rotate, so that the lower surface of the L-shaped baffle 42 is in contact with the rubber pad 47, and then press the soft plate 43 downward, so that the Velcro 1 44 and the Velcro 2 45 are in close contact, and then cooperate with the rubber pad to improve the fixing strength of the arc-shaped shell 21, and then start the air pump 34 to push the air tube 33 to the The air cushion 32 is inflated so that the air cushion 32 swells, driving the part that needs cold compress to move upward, and fixing the cold compress part at the same time. After fixing, the air pump 34 is turned off, and the refrigeration system 272 is started to cool the condensate in the condenser 271, and then the circulating water pump 273 is started to drive the condensate to circulate in the condenser 271 and the refrigeration system 272, thereby ensuring that the temperature of each position of the condenser 271 is the same. If the temperature is not enough to meet the cold compress demand at that time, the electric rotating rod 274 is started to drive the fan blades 275 to rotate, and the cold air in the arc-shaped shell 21 is blown into the fluff pad 26 through the ventilation hole 23, thereby meeting the cold compress demand. If the temperature is low, the electric rotating rod 274 is turned off to stop blowing cold air into the fluff pad 26, thereby increasing the cold compress temperature to meet the needs of different situations.

[0040] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A clinical cold compress device for bone and joint surgery, comprising an adjustment mechanism (1), characterized in that: The tail end of the adjustment mechanism (1) is fixedly connected to a refrigeration mechanism (2), the bottom of the refrigeration mechanism (2) is hinged inside the base mechanism (3), the front side of the adjustment mechanism (1) is fixedly connected to the back of the base mechanism (3), the right side of the base mechanism (3) is hinged to a fixing mechanism (4), and the left side of the fixing mechanism (4) is fixedly connected to the right side of the refrigeration mechanism (2); The adjustment mechanism (1) comprises a dustproof box (11), the interior of the dustproof box (11) is fixedly connected to a support plate (12), the top of the dustproof box (11) is fixedly connected to a drive motor (13), and the output end of the drive motor (13) extends to the interior of the dustproof box (11), and the output end of the drive motor (13) is fixedly connected to a bevel gear 1 (14).

2. A clinical cold compress device for bone and joint surgery according to claim 1, characterized in that: The tail end of the bevel gear one (14) passes through the inner middle part of the support plate (12); the surface of the bevel gear one (14) is fixedly connected to a limit plate (15); the limit plate (15) is located on the upper surface of the support plate (12); the bevel gear one (14) is meshed with the bevel gear two (16); the tail end of the bevel gear two (16) passes through the front side of the dustproof box (11).

3. A clinical cold compress device for bone and joint surgery according to claim 1, characterized in that: The refrigeration mechanism (2) comprises an arc-shaped outer shell (21), a heat preservation pad (22) is fixedly connected to the inner upper side of the arc-shaped outer shell (21), ventilation holes (23) are provided on the surface of the heat preservation pad (22) and the upper and lower surfaces of the arc-shaped outer shell (21), and a connecting rod (24) is hinged on the left side of the arc-shaped outer shell (21).

4. A clinical cold compress device for bone and joint surgery according to claim 3, characterized in that: The tail end of the connecting rod (24) is fixedly connected to the tail end of the second bevel gear (16), the lower surface of the arc-shaped outer shell (21) is fixedly connected to a water-isolating pad (25), the bottom of the water-isolating pad (25) is sleeved with a fluff pad (26), and the interior of the arc-shaped outer shell (21) is fixedly connected to a refrigeration assembly (27).

5. A clinical cold compress device for bone and joint surgery according to claim 4, characterized in that: The refrigeration assembly (27) includes a condenser (271), one end of the condenser (271) is fixedly connected to a refrigeration system (272), the middle of the condenser (271) is fixedly connected to a circulating water pump (273), an electric rotating rod (274) is provided on the inner upper side of the arc-shaped shell (21), the surface of the electric rotating rod (274) is fixedly connected to a fan blade (275), and the electric rotating rod (274) and the fan blade (275) are both located above the condenser (271).

6. A clinical cold compress device for bone and joint surgery according to claim 1, characterized in that: The base mechanism (3) comprises a bottom plate (31), the rear side of the bottom plate (31) is fixedly connected to the front side of the dustproof box (11), the left side of the upper surface of the bottom plate (31) is hinged to the outer surface of the connecting rod (24), the upper surface of the bottom plate (31) is fixedly connected to an air cushion (32), the air cushion (32) is sleeved on the bottom of the arc-shaped outer shell (21), and the interior of the air cushion (32) is fixedly connected to an inflation tube (33).

7. A clinical cold compress device for bone and joint surgery according to claim 6, characterized in that: The inflation tube (33) is fixedly connected to the inside of the bottom plate (31); the air inlet end of the inflation tube (33) is threadedly connected to an inflation pump (34); the back of the inflation pump (34) is fixedly connected to the front side of the bottom plate (31); the inner wall of the air cushion (32) is fixedly connected to a soft pad (35); and the lower surface of the bottom plate (31) is fixedly connected to an anti-slip pad (36).

8. A clinical cold compress device for bone and joint surgery according to claim 1, characterized in that: The fixing mechanism (4) comprises a cross bar (41), the front and rear ends of the cross bar (41) are sleeved inside the right side of the bottom plate (31), the surface of the cross bar (41) is fixedly connected to an L-shaped baffle (42), the left side of the L-shaped baffle (42) is fixedly connected to a soft plate (43), and the bottom of the soft plate (43) is fixedly connected to a Velcro 1 (44).

9. A clinical cold compress device for bone and joint surgery according to claim 8, characterized in that: The lower surface of the Velcro 1 (44) is adhered with Velcro 2 (45), the bottom of the Velcro 2 (45) is fixedly connected with a connecting plate (46), the left side of the connecting plate (46) is fixedly connected to the right side of the arc-shaped shell (21), and the upper surface of the connecting plate (46) is fixedly connected with a rubber pad (47), and the rubber pad (47) is tightly attached to the lower surface of the L-shaped baffle (42).

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